I did some initial testing then used this for a while in some RBGs.
Initially it seemed to still changing the bar color, but seemed to only be for previously defined debuffs; after deleting and re-adding them the issue went away. So this possibly fixed the automatic debuff coloring issue.
However, this version still suffers from coloring issues. Specifically for Poison/Curse/Magic/Disease Dispellable debuffs monitored by the spell to remove it on raid. Healbot seems to remove the bar color for the Poison/Curse/Magic/Disease when another aura is applied but user still has a Dispellable debuff.
I will continue to test and report any reproducible findings; however, this has been an issue since the 9.0.5 releases and I hope we can get it fixed. I can open a new bug report if needed.
I did some testing both in Battle Grounds and Dungeons. In both scenarios there are occasions where debuffs like magic/curse/etc do not change the bar color or the bar losses its color before the debuff is gone.