It would be amazing if the app had the option to not only change the colour based on domain alone but also include specific url paths.

While not as easy as the old XUL Colorfultabs is is better than the web extension of Colorfultabs. That said I wish it could color each tab without the need to select the tab. That would be worth 5 stars and probably more. Good job thus far. However today I found a bug. If I have already saved a color for a domain I can't change it and resave it. I have to delete the color for the domain first and then save it. Definitely not Intuitive.