I agree with tehe general chorus opposing the orange laden ancient red. It can be done with your tartan, but, but, claret and even (dare I say it) tartan red might work better.

Besides the purple Matt already sugegsted, mustard yellow might could work too.

I though I really wanted a pair of ancient red hose, but none of the 22 girls surveyed in my office thought it would work for me. I bet with MacLeod of Lewis and the right skin tones the ancient red might be smashing.