When you use your Action Point, the little indicator in the center goes from dark green to grey, and it's very hard for me to distinguish the two. I would prefer if the green was brighter, or if there was a simple non-color indicator, like an oblique bar striking through the circle when the Action Point is used up.
Context: I have Deuteranomaly, which means I can see all colors, but have trouble distinguishing some colors that are close to each other, like in this case dark faded green and grey.