Damon suggested that maybe these aren’t apostrophe mistakes at all; perhaps there are three tour guides based in Colorado Springs named Gold’s, Red’s, and Orange’s. In that case, it’s just a capitalization issue. 😉
This has got to be one of the most common mistakes I see; this one is from a music store in Augusta, Georgia. I’ll try to post a picture soon from a store here in Seattle where they use an apostrophe for “CD’s”, but not for “DVDs”.
See also: http://www.soyouwanna.com/site/syws/wrerrors/wrerrors3.html