Color problem with 16 and 32 bit settings in Windows

I’m having a problem I haven’t seen before with a Flash application I’m working on. Here are two images of a sample app: one is taken with 16 bit color setting and the [URL=“”]other with 32 bits. The texts are standard dynamic text fields.

when i view the app at 32 bits all colors seem to be OK, but when I set it at 16 the textboxes seem to have a different background color, even though it’s set to transparent!

has anybody else seen something like this?