With Retro Clock Settings you can change the look and feel of Retro Clock Widget
Retro Clock Widget was one of the first clock widgets available for android and has been downloaded by millions of users over the years.
This Retro Clock Settings companion app allows you to customize the look and feel (like the colors, transparency, or shortcut applications) of Retro Clock Widget.
In order to use this application you must have Retro Clock Widget 2.0 installed. It is available for free on Google Play