When the boss take damage when it appear, the Bar icon take the color of the damaging boss, with the red color. I assume it is because on the first frame you apply the boss color on the boss icon bar.
This can be reproduced easily with "Toxic Shock".
When the boss take damage when it appear, the Bar icon take the color of the damaging boss, with the red color. I assume it is because on the first frame you apply the boss color on the boss icon bar. This can be reproduced easily with "Toxic Shock".