I just received my set of "Man from UNCLE" from BN last week. It is a nice set and has been on my wanted list for a while so I finally broke down and got it for $89 shipped.
I seem to recall hearing that season 3 and on of Superman was broadcast in b/w even thought it was shot in color. So either it isn't a bit deal dialing the color out or they made provisions for the fact it would be viewed in b/w.