Colour Reference rows

Can I request that you add the ability to add a colour to a reference row in the main library window ie references that have say an excellent results section I colour that reference green and paper that have say excellent lab protocols colour the row in Orange.

The give me the ability to sort and group by colour. I use smart groups to automatically collect journal articles automatically, but I would like to be able to add a comment (see seperate post request) and colour code and sort those articles within the smart group that meet my criteria - in this case maybe all the red articles.