Re: [PATCH] tab-line-alternate-colors

[Adam Porter]

By the way, your rainbow idea may have some merit.  Using the modifiers
implemented in that patch, I hacked this together using buffers' Bufler
workspace as the key for generating a unique color, and applied the same
color to the tab and the buffer's row in bufler-list:

https://i.imgur.com/gZZqC5u.png

Obviously it could use some polishing, but the colors do help show which
tab-line tabs are in which workspace.  (I also sorted the tabs by
workspace.)