Tab Map adjustment

Please can you give us a method to totally darken the map overlay (Tab map, not mini map) to make it easier to see?
The amount of times I've ran around to get a position where I can actually make out the map is not funny, also any chance of making the position of your character on the map bigger? The tiny yellow "x" sometimes makes it difficult to actually see where on the map you are.
Thank you for making a fun to play, challenging but very rewarding game.