adding a helper function for getting bottom tab bg color

commons/src/main/kotlin/com/simplemobiletools/commons/extensions/Context-styling.kt

@@ -167,3 +167,13 @@ fun Context.toggleAppIconColor(appId: String, colorIndex: Int, color: Int, enabl
 }
 
 fun Context.getAppIconColors() = resources.getIntArray(R.array.md_app_icon_colors).toCollection(ArrayList())
+
+fun Context.getBottomTabsBackgroundColor(): Int {
+    val baseColor = baseConfig.backgroundColor
+    val bottomColor = if (baseColor == Color.WHITE) {
+        resources.getColor(R.color.bottom_tabs_light_background)
+    } else {
+        baseConfig.backgroundColor.lightenColor(4)
+    }
+    return bottomColor
+}

commons/src/main/res/values/colors.xml

@@ -9,6 +9,7 @@
     <color name="divider_grey">#88808080</color>
     <color name="gradient_grey_start">#CC000000</color>
     <color name="dark_grey">#FF333333</color>
+    <color name="bottom_tabs_light_background">#FFF1F1F1</color>
 
     <color name="hint_white">#99FFFFFF</color>
     <color name="hint_black">#66000000</color>