Colour shift in swf

Hi

I have a psd that is to be the background of a flash site that i’m working on. I’ve tried every combination of exporting from photoshop and flash but the end result (in the browser) is always significantly brighter. Does anyone know what the best prossess for keeping the colour of imported raster content accurate in swf while keeping the size moderate :-/

Any insight would be appreciated

Thanks in advance