I understand the rationale - but the icons are too small if they are inactivated in f10. And gray is a horrible default color for this game. The color dot is nice - but too small to be useful. Changing the whole icon color would have been better (imo). And the ability to increase the size/color should be available as an in-game feature, nothing fancy needed just color and scalable.
As someone who is visually challenged (mostly by age ), I find myself hunting on the screen for the icon as it blends into the game....its like Where's Waldo.