Illustrator :: Changing Art Board Colour Boarder

I find myself using Black Backgrounds often in illustrator. Bleeding a Black BG makes it impossible to see the art board boarder.
 
The solution to this has been for me to either place guild lines on these guide lines (silly really) and jarring. specially when you already have guide lines there.
 
Or to make a new layer, place a box on the board and give it a outline .5 stroke thinkness or so depending on the zoom because white on the black line thats above it screws up visually depending on the distance you zoom out from.
 
Or has Adobe given us a choose your colour option i don't know about? 50% Grey would be great.  can see on white and black.