Works beautifully - I don't know why advertise it mainly for devs, I like to use it on my main websites, but I guess devs can use it most practically.
Also, when you open the colour panel, you can change tab and use the colour picker to pick the colour you want. I use this to change tabs' colours to ones that match a colour on the page.
I cool feature would be to add random colours to new tabs that do not have pre-defined sets.
Great add-on!

Envify updated and I lost all my custom environments. Very disappointing.

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.

Unfortunately it doesn’t play well with the Firefox Color (test pilot addon) or even the default dark theme.
Great concept and can be useful, but needs more refined execution.

Une très bonne idée. Merci ! :)

very good

Envify did not work, It disabled my theme. Seems like I need to uninstall it because all it did was lock my theme as default.

so helpful

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

Amazing. Works like a charm, very nice extensions to make your favourite sites feel at home. Also something that makes Firefox feel just nicer.

Helps me differentiate my environments by coloring them.

This is a really simple but beautiful extension that keeps things visually interesting while not getting in the way