Change the timerText and border color of the debuff to the debuff color

[excorp]

Blizzard's default feature assigns a border color, but the default debuff color is red in Blizzard, so I set a light gray color as the default, since it seems to be indistinguishable from the bleeding debuff.

I also made the debuff color use the settings from that module if the user is using the AuraHighlight module.