I know there weren't many answers in the last weeks in this thread, but:
what if we do a red legend and a translucent orange base? I imagine this would look pretty good, and the orange isn't as simple or plain as pure translucent plastic so maybe the red doesn't even stand out that much.
In my opinion, this combination would fit even better than the previously mentioned combination with translucent legends, maybe a set like this would get more interest.