ANY CHEAPER SOURCES ? :)
If you know anyone, hit up the local AFB, see if they have any laying around. WIWAC, which wasn't TOO terribly long ago, my uncle, a CMSgt, managed to turn up 10 service caps, all in good condition. Shoulda held onto em instead of passing them out.
Otherwise, just drive over to the local AAFES or order online, they're not too bad in price there.
I'd stay away from ebay, I've seen some jacked up stuff on there.
Old Lincoln County has a listing for them (cheap too)....can't say what shade they are from the description. Might warrant a call on them, though. Very first item under the AF section.......
http://olcnet.com/index.htm#af1