As of the moment, it is possible to set different character name visibility to your own party members vs other parties in the alliance. Since mass heals of any kind only affect to your own party that is helpful in judging where your party members are and if AoE healing would be reasonable or not. While it is also possible to set different visibility to particle effects in party or outside of it, the problem here is that everyone in the alliance is counted as your party.
While the old adage "heal bubble, stand in it" is true, in some cases it's hard to judge which of the heal bubbles you should head into if they are separate of each other. It'd also make it easier to see it at glance if your co heal already popped a heal bubble in cases where the other one would just be a waste.
I request an option where only your own actual party heal bubble would be the color as it is now, and the other party heal bubbles in alliance would show in another hue (maybe green, as all jobs now have bluish effect), or in far darker color. (Or both) The color in itself doesn't matter as much, just make them easily separable.