Stamped Blue SL Theme is a free personalization app designed specifically for use with dark and vivid background wallpapers. It is a modern and bold Smart Launcher Theme that comes with a matching Analog Clock Widget. To use this theme, users must have Smart Launcher installed on their Android phone. Once installed, users can access the theme by navigating to App Drawer > Menu Button > Preferences > Theme > Stamped Blue.

The app developer, Forte2, recommends that users also install the Stamped Blue Icon Pack to ensure the best experience. Users can enable the icon pack by going to App Drawer > Menu Button > Theme Settings > Bubbles:icons theme. Additionally, in Android 4.4, users can disable transparency in Smart Launcher settings by clicking App Drawer > Menu Button > Preferences > Global Settings > Transparent Decorations if the status and navigation bars do not show up well against a light background.

Users can email the developer with requests for a similar theme with a different color, bubble shape, or clock font, as the developer is very responsive to user emails. Overall, Stamped Blue SL Theme is a great option for users who want a modern and bold theme for their Android phone's Smart Launcher.