Canvas Themeinator

This extension adds themes to Canvas. Currently, there are 10:
-Dark
-AMOLED Dark
-Light
-Aqua
-Purple
-Dark Purple
-Blue
-Dark Blue
-Green
-Orange
+Custom Themes (currently in beta)

This extension is open-source. The GitHub link is below:
https://github.com/one23four56/canvas-themeinator

This extension is a SIDE PROJECT of mine. Do not expect regular updates, I am only maintaining this because I use it. If you really want a feature, go onto GitHub and add it yourself.