Allows setting an overlay texture for specific units.
Plater includes functionality to change the health bar color based on threat, health, or custom values for specific NPCs, but it doesn't let you change the health bar texture for specific NPCs. A lot of people have categorized NPCs with colors, but changing health bar colors that way isn't great for me, as a tank, that uses health bar colors for threat indicators. What I needed was another dimension to let me distinguish threat, and still have custom colors for casters, etc. Hence, why this mod exists.
If you want multiple colors, then you'll want to use textures with transparency, like PlaterFocus.
See the constructor for details on how to add additional units and specify their textures and colors.