a couple years ago i used a ui that gave you a choice for map backgrounds; either the standard parchment or black. the black was perfect because the labels were bright and easily seen. i had to stop using this ui because it wasn't updated and no longer worked. i can't remember the name of the ui.
anyway it would be awesome if someone else could pick up the ball and give a map background color choice. it's extremely difficult to read the maps with parchment background especially when there are light blue and neon green lines on it. the green just gets lost in the background as does the light blue.