I've noticed that some components don't render colors as requested. For example, I am trying to set a progress bar color to #333333. It is way too bright when drawn. Measuring it with the Mac's Digital Color Meter app shows that it is being rendered as #848484.
Another example is text color on buttons. It doesn't bear any relation to the color I specify. It's usually darker.
Is there some setting I'm missing which will tell Flex to draw the color I ask for?
You can take a bitmap capture and see what the pixel values are.