Though it might be very difficult to implement, I would suggest that you take into accound the needs of color deficient users. What looks contrasting to me may look very similar to someone else. Safe Web Colours is a good website with design tips regarding color-deficiency.

Because of this difficulty, I would suggest that you either a) compile a data set of colors that are contrasting for any user or b) scrap the bg changing shenanegins. In general, I would suggest the latter because even without color deficiency, some combinations are too harsh to be of any use.

Hope this helps!

In reply to Re: to generate a set of well contrasted colors by jweed
in thread to generate a set of well contrasted colors by pg

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