diff --git a/app/src/main/java/com/nextcloud/talk/application/NextcloudTalkApplication.kt b/app/src/main/java/com/nextcloud/talk/application/NextcloudTalkApplication.kt
index c8e05df8f..5407a12f4 100644
--- a/app/src/main/java/com/nextcloud/talk/application/NextcloudTalkApplication.kt
+++ b/app/src/main/java/com/nextcloud/talk/application/NextcloudTalkApplication.kt
@@ -61,6 +61,7 @@ import com.nextcloud.talk.dagger.modules.ViewModelModule
 import com.nextcloud.talk.jobs.AccountRemovalWorker
 import com.nextcloud.talk.jobs.CapabilitiesWorker
 import com.nextcloud.talk.jobs.SignalingSettingsWorker
+import com.nextcloud.talk.ui.theme.ThemeModule
 import com.nextcloud.talk.utils.ClosedInterfaceImpl
 import com.nextcloud.talk.utils.DeviceUtils
 import com.nextcloud.talk.utils.DisplayUtils
@@ -96,7 +97,8 @@ import javax.inject.Singleton
         ArbitraryStorageModule::class,
         ViewModelModule::class,
         RepositoryModule::class,
-        UtilsModule::class
+        UtilsModule::class,
+        ThemeModule::class
     ]
 )
 @Singleton
@@ -120,6 +122,7 @@ class NextcloudTalkApplication : MultiDexApplication(), LifecycleObserver {
         override fun preKey(database: SQLiteDatabase) {
             // unused atm
         }
+
         override fun postKey(database: SQLiteDatabase) {
             Log.i("TalkApplication", "DB cipher_migrate START")
             database.rawExecSQL("PRAGMA cipher_migrate;")
diff --git a/app/src/main/java/com/nextcloud/talk/controllers/ConversationsListController.java b/app/src/main/java/com/nextcloud/talk/controllers/ConversationsListController.java
index a15883a29..07de2674d 100644
--- a/app/src/main/java/com/nextcloud/talk/controllers/ConversationsListController.java
+++ b/app/src/main/java/com/nextcloud/talk/controllers/ConversationsListController.java
@@ -92,6 +92,8 @@ import com.nextcloud.talk.models.json.statuses.StatusesOverall;
 import com.nextcloud.talk.repositories.unifiedsearch.UnifiedSearchRepository;
 import com.nextcloud.talk.ui.dialog.ChooseAccountDialogFragment;
 import com.nextcloud.talk.ui.dialog.ConversationsListBottomDialog;
+import com.nextcloud.talk.ui.theme.ServerTheme;
+import com.nextcloud.talk.ui.theme.ViewThemeUtils;
 import com.nextcloud.talk.users.UserManager;
 import com.nextcloud.talk.utils.ApiUtils;
 import com.nextcloud.talk.utils.AttendeePermissionsUtil;
@@ -181,6 +183,9 @@ public class ConversationsListController extends BaseController implements Flexi
     @Inject
     UnifiedSearchRepository unifiedSearchRepository;
 
+    @Inject
+    ServerTheme serverTheme;
+
     @BindView(R.id.recycler_view)
     RecyclerView recyclerView;
 
@@ -784,6 +789,7 @@ public class ConversationsListController extends BaseController implements Flexi
             ContactAddressBookWorker.Companion.run(context);
             showNewConversationsScreen();
         });
+        new ViewThemeUtils(serverTheme).themeFAB(floatingActionButton);
 
         if (getActivity() != null && getActivity() instanceof MainActivity) {
             MainActivity activity = (MainActivity) getActivity();
diff --git a/app/src/main/java/com/nextcloud/talk/models/json/capabilities/ThemingCapability.kt b/app/src/main/java/com/nextcloud/talk/models/json/capabilities/ThemingCapability.kt
index 6dfdcae7b..bfa86bb61 100644
--- a/app/src/main/java/com/nextcloud/talk/models/json/capabilities/ThemingCapability.kt
+++ b/app/src/main/java/com/nextcloud/talk/models/json/capabilities/ThemingCapability.kt
@@ -43,6 +43,11 @@ data class ThemingCapability(
     var colorText: String?,
     @JsonField(name = ["color-element"])
     var colorElement: String?,
+    // TODO check what happens with users with already fetched capabilities
+    @JsonField(name = ["color-element-bright"])
+    var colorElementBright: String?,
+    @JsonField(name = ["color-element-dark"])
+    var colorElementDark: String?,
     @JsonField(name = ["logo"])
     var logo: String?,
     @JsonField(name = ["background"])
@@ -53,5 +58,5 @@ data class ThemingCapability(
     var backgroundDefault: Boolean?
 ) : Parcelable {
     // This constructor is added to work with the 'com.bluelinelabs.logansquare.annotation.JsonObject'
-    constructor() : this(null, null, null, null, null, null, null, null, null, null)
+    constructor() : this(null, null, null, null, null, null, null, null, null, null, null, null)
 }
diff --git a/app/src/main/java/com/nextcloud/talk/ui/theme/ServerTheme.kt b/app/src/main/java/com/nextcloud/talk/ui/theme/ServerTheme.kt
new file mode 100644
index 000000000..ad31f29d9
--- /dev/null
+++ b/app/src/main/java/com/nextcloud/talk/ui/theme/ServerTheme.kt
@@ -0,0 +1,53 @@
+/*
+ * Nextcloud Talk application
+ *
+ * @author Álvaro Brey
+ * Copyright (C) 2022 Álvaro Brey
+ * Copyright (C) 2022 Nextcloud GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.nextcloud.talk.ui.theme
+
+import androidx.annotation.ColorInt
+
+interface ServerTheme {
+    @get:ColorInt
+    val primaryColor: Int
+
+    /**
+     * Default element color
+     */
+    @get:ColorInt
+    val colorElement: Int
+
+    /**
+     * Element color for bright backgrounds
+     */
+    @get:ColorInt
+    val colorElementBright: Int
+
+    /**
+     * Element color for dark backgrounds
+     */
+    @get:ColorInt
+    val colorElementDark: Int
+
+    /**
+     * Text color for elements
+     */
+    @get:ColorInt
+    val colorText: Int
+}
diff --git a/app/src/main/java/com/nextcloud/talk/ui/theme/ServerThemeImpl.kt b/app/src/main/java/com/nextcloud/talk/ui/theme/ServerThemeImpl.kt
new file mode 100644
index 000000000..cd4607e22
--- /dev/null
+++ b/app/src/main/java/com/nextcloud/talk/ui/theme/ServerThemeImpl.kt
@@ -0,0 +1,45 @@
+/*
+ * Nextcloud Talk application
+ *
+ * @author Álvaro Brey
+ * Copyright (C) 2022 Álvaro Brey
+ * Copyright (C) 2022 Nextcloud GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.nextcloud.talk.ui.theme
+
+import android.content.Context
+import android.graphics.Color
+import com.nextcloud.talk.models.json.capabilities.ThemingCapability
+
+internal class ServerThemeImpl(context: Context, themingCapability: ThemingCapability) :
+    ServerTheme {
+
+    override val primaryColor: Int
+    override val colorElement: Int
+    override val colorElementBright: Int
+    override val colorElementDark: Int
+    override val colorText: Int
+
+    // TODO fallback when some of these are null
+    init {
+        primaryColor = Color.parseColor(themingCapability.color!!)
+        colorElement = Color.parseColor(themingCapability.colorElement!!)
+        colorElementBright = Color.parseColor(themingCapability.colorElementBright!!)
+        colorElementDark = Color.parseColor(themingCapability.colorElementDark!!)
+        colorText = Color.parseColor(themingCapability.colorText!!)
+    }
+}
diff --git a/app/src/main/java/com/nextcloud/talk/ui/theme/ServerThemeProvider.kt b/app/src/main/java/com/nextcloud/talk/ui/theme/ServerThemeProvider.kt
new file mode 100644
index 000000000..2646e9a79
--- /dev/null
+++ b/app/src/main/java/com/nextcloud/talk/ui/theme/ServerThemeProvider.kt
@@ -0,0 +1,31 @@
+/*
+ * Nextcloud Talk application
+ *
+ * @author Álvaro Brey
+ * Copyright (C) 2022 Álvaro Brey
+ * Copyright (C) 2022 Nextcloud GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.nextcloud.talk.ui.theme
+
+import com.nextcloud.talk.data.user.model.User
+import com.nextcloud.talk.models.json.capabilities.Capabilities
+
+interface ServerThemeProvider {
+    fun getServerThemeForUser(user: User): ServerTheme
+    fun getServerThemeForCurrentUser(): ServerTheme
+    fun getServerThemeForCapabilities(capabilities: Capabilities): ServerTheme
+}
diff --git a/app/src/main/java/com/nextcloud/talk/ui/theme/ServerThemeProviderImpl.kt b/app/src/main/java/com/nextcloud/talk/ui/theme/ServerThemeProviderImpl.kt
new file mode 100644
index 000000000..f10ad61e4
--- /dev/null
+++ b/app/src/main/java/com/nextcloud/talk/ui/theme/ServerThemeProviderImpl.kt
@@ -0,0 +1,46 @@
+/*
+ * Nextcloud Talk application
+ *
+ * @author Álvaro Brey
+ * Copyright (C) 2022 Álvaro Brey
+ * Copyright (C) 2022 Nextcloud GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.nextcloud.talk.ui.theme
+
+import android.content.Context
+import com.nextcloud.talk.data.user.model.User
+import com.nextcloud.talk.models.json.capabilities.Capabilities
+import com.nextcloud.talk.utils.database.user.CurrentUserProviderNew
+
+// TODO cache theme, keyed by server url
+internal class ServerThemeProviderImpl(
+    private val context: Context,
+    private val userProvider: CurrentUserProviderNew
+) :
+    ServerThemeProvider {
+    override fun getServerThemeForUser(user: User): ServerTheme {
+        return getServerThemeForCapabilities(user.capabilities!!)
+    }
+
+    override fun getServerThemeForCurrentUser(): ServerTheme {
+        return getServerThemeForUser(userProvider.currentUser.blockingGet())
+    }
+
+    override fun getServerThemeForCapabilities(capabilities: Capabilities): ServerTheme {
+        return ServerThemeImpl(context, capabilities.themingCapability!!)
+    }
+}
diff --git a/app/src/main/java/com/nextcloud/talk/ui/theme/ThemeModule.kt b/app/src/main/java/com/nextcloud/talk/ui/theme/ThemeModule.kt
new file mode 100644
index 000000000..f1db5ed26
--- /dev/null
+++ b/app/src/main/java/com/nextcloud/talk/ui/theme/ThemeModule.kt
@@ -0,0 +1,45 @@
+/*
+ * Nextcloud Talk application
+ *
+ * @author Álvaro Brey
+ * Copyright (C) 2022 Álvaro Brey
+ * Copyright (C) 2022 Nextcloud GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.nextcloud.talk.ui.theme
+
+import android.content.Context
+import com.nextcloud.talk.dagger.modules.ContextModule
+import com.nextcloud.talk.utils.database.user.CurrentUserProviderNew
+import com.nextcloud.talk.utils.database.user.UserModule
+import dagger.Module
+import dagger.Provides
+import dagger.Reusable
+
+@Module(includes = [ContextModule::class, UserModule::class])
+class ThemeModule {
+
+    @Provides
+    @Reusable
+    fun provideServerThemeProvider(context: Context, userProvider: CurrentUserProviderNew): ServerThemeProvider {
+        return ServerThemeProviderImpl(context, userProvider)
+    }
+
+    @Provides
+    fun provideCurrentServerTheme(themeProvider: ServerThemeProvider): ServerTheme {
+        return themeProvider.getServerThemeForCurrentUser()
+    }
+}
diff --git a/app/src/main/java/com/nextcloud/talk/ui/theme/ViewThemeUtils.kt b/app/src/main/java/com/nextcloud/talk/ui/theme/ViewThemeUtils.kt
new file mode 100644
index 000000000..512189085
--- /dev/null
+++ b/app/src/main/java/com/nextcloud/talk/ui/theme/ViewThemeUtils.kt
@@ -0,0 +1,48 @@
+/*
+ * Nextcloud Talk application
+ *
+ * @author Álvaro Brey
+ * Copyright (C) 2022 Álvaro Brey
+ * Copyright (C) 2022 Nextcloud GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.nextcloud.talk.ui.theme
+
+import android.content.Context
+import android.content.res.ColorStateList
+import android.content.res.Configuration
+import com.google.android.material.floatingactionbutton.FloatingActionButton
+
+class ViewThemeUtils(val theme: ServerTheme) {
+
+    private fun isDarkMode(context: Context): Boolean = when (
+        context.resources.configuration.uiMode and
+            Configuration.UI_MODE_NIGHT_MASK
+    ) {
+        Configuration.UI_MODE_NIGHT_YES -> true
+        else -> false
+    }
+
+    private fun getElementColor(context: Context): Int = when {
+        isDarkMode(context) -> theme.colorElementDark
+        else -> theme.colorElementBright
+    }
+
+    fun themeFAB(fab: FloatingActionButton) {
+        fab.backgroundTintList = ColorStateList.valueOf(getElementColor(fab.context))
+        fab.imageTintList = ColorStateList.valueOf(theme.colorText)
+    }
+}
diff --git a/app/src/main/res/layout/controller_conversations_rv.xml b/app/src/main/res/layout/controller_conversations_rv.xml
index c595b9ed8..06aa71d2b 100644
--- a/app/src/main/res/layout/controller_conversations_rv.xml
+++ b/app/src/main/res/layout/controller_conversations_rv.xml
@@ -115,11 +115,11 @@
         android:layout_height="wrap_content"
         android:layout_gravity="bottom|end"
         android:layout_margin="16dp"
-        android:backgroundTint="@color/colorPrimary"
         android:contentDescription="@string/nc_new_conversation"
         app:borderWidth="0dp"
         app:srcCompat="@drawable/ic_add_white_24px"
-        app:tint="@color/white" />
+        app:tint="@color/white"
+        app:backgroundTint="@color/colorPrimary"/>
 
     <com.nextcloud.ui.popupbubble.PopupBubble
         android:id="@+id/newMentionPopupBubble"