Add the ability to customize tab color in the right click dropdown

[Mars-or-bust]

I’m a programmer and always have a million tabs open. It would be nice to be able to color-code the tab I’m actively working out of so I can identify it faster rather than clicking through each tab with the same icon. For example, I usually have multiple github pages up but am really only focused on one at a time. I included a mock-up to show you what I’m thinking: