I have polished the anodize finish from the frame of a Single Six. Used some 320 wet/dri paper then a Dremel polishing kit and some polishing compound. The strange coloration one the back strap in the second photo is a reflection and not the actual color. It is as shiny as a new penny.
http://www.rugerforum.com/phpBB3/viewtopic.php?f=1&t=193110