Flash-Colours on IE

Colours of my flash animation change when I load it into browser

[Jeeek]

so... - here's my problem:
I got a Flash Navigation in the upper frame of my site, the frame beyond that one should have the same colour as the background of the flash-movie;

done that 100s of times (well - nearly..) without having any troubles with it, but this time...

when I open the .swf file using flash player, all is fine;
when I open the .swf with my browser directly, all is fine;
but when I load the .html file with embedded swf into my frameset, then the colour is srewed up (not red becoming green, but still enough to see a difference)

any advice?

[Philarmon]

There is sometimes a difference in colors when your screen resolution is set to 16 bit colors. With true colors (32 bit) it should be fine. I guess the only way to fix that is to use web safe colors in Flash :(