Not sure if this is even possible with stock frames but coloring them by the type of debuff is the only thing I miss from Vuhdo that this addon can't do. Also coloring by an arbitrary color that's not the default green (such as all frames colored grey irrespective of class) would be awesome but not as big a deal.

Fantastic addon by the way, really appreciate your work!

This can be achieved by using SetStatusBarColor on frame.healthBar.

Working prototype:
master...eSkiSo:master

Does need a bit of work in the settings side (allow player to choose if he wants this or not and if want to see only dispellable by him etc but is a nice starting point for something great =D

I added the suggestion for an alert like this in the wildcard thread because that's basically what they were looking for too...something more to say "hey dispel". Though I'd like more than a random color...sorry...I like a color for "hey dispel" a color for heal absorbs (non dispellable...in vuhdo I go in by spell ID and program) so I know to heal it off and a color for a debuff that means person can't be healed (again I go in and manually set). And, I know some people like at a certain percentage health for the frame (or border) to change color. So some utility to program border or frame color based on alert (debuff type, debuff ID, and health left) would be huge.