Actually, I'm partial to Alizarin Crimson & Cobalt Blue. A true Purple would work nice with a Metallic Gold color in my opinion.
Turquoise is nice and goes really well with a Silver & Black scheme.
I'm afraid that the green chosen by eBid is a bit too Chartreuse for my taste. Of course, maybe a Hot Pink would work well with it.
I'm working on the LOGO of my new store, soon to be here on eBid so I'll see if I can work in something that will compliment the new site color scheme. Something in Paisley, Plaid & Polka Dots maybe?