Frank Fesevur - 2013-12-19

I really like this idea. Especially if (later) some form of automatic assigning of the color could be done or you could assign the color with a plugin.

I am not an NPP core dev so I don't know how difficult it really is, but after a quick look at the SVN (line 51/55 and 336/359) it shows the control that is used to create the tabs supports changing the background color.