I saw watch faces in the galaxy store with gradient, but I can’t find how to do that in GWS.
Hello, if you make a bitmap font as square images of same size with transparent digits, then you can place one colorful image behind it, so the text layer above will work as a mask.
That colorful image can be set as button and change to other images with different colors, gradients or patterns. It will be seen trough the transparent digits, which would seem like changing, while only the image behind changes.
Check this tutorial to see how to use it.