A great idea and works as expected but a few things will be great: select a theme or a color instead of just a color. Also will be great if you can select a default theme, due to on my FF dev with black theme it sets the default theme for other sites.

Very fun extension. Wish there were more preset colors to choose from. I use the flat color picker extension to find new colors.

It's pretty cool! I wish there were was more support for alternative themes and color gradients, but it works really well otherwise! I would definitely get this extension!

Useful during testing.

I really like the idea and it is really nice and appealing and helps you recognize which site you're on. What would be even more awesome is if you could set themes for each environment and also that I don't have to use the default theme for my default theme :D