white background mac

does anybody know or is it a bug but when i start web player on mac background is white instead of default blueish color. browser is safarai. the same things works nicely on windows machine... help!

As far as I know, Unity webplayer currently has problems with Mac Chrome and Mac Safari (I reported bug #362595 about it). Try with Mac Firefox - if that works fine, then the problem rests with Unity Technologies and not your code.