I do not like the random colors. The orange and Purple don't flow well with the red and grey scheme I can see as more dominant. Stick with those colors, and I think it would be nice. Also, on my boards I like bright, big, and simple graphics. To be honest, people usually see your board from a distance and that is what they will think of it. If it is that intricate and detailed, from a distance the board will just look grey, nothing more. Just my 2 cents on what I know about graphics based on light client/photoshop work.