Excessive use of colour can certainly be vulgar - but restrained use is a valuable tool for clarity. As I type this, Firefox shows no hint at all that it has input focus, other than the tab's background being very slightly lighter and the tab's title text being very slightly darker. It's not so very long ago that colour would have been used to communicate this information clearly and unambiguously.
Excessive use of colour can certainly be vulgar - but restrained use is a valuable tool for clarity. As I type this, Firefox shows no hint at all that it has input focus, other than the tab's background being very slightly lighter and the tab's title text being very slightly darker. It's not so very long ago that colour would have been used to communicate this information clearly and unambiguously.
Translation: my subjective taste is high and those who differ are vulgar.