I mentioned this earlier when the screenshots with team colored pylons and stuff came out I think it got shot down but I can't remember why It would be cool though
I think this would be an awesome idea. Though, if we made it even more in depth by say making it allow you to do this. -Custom Color -Custom Emblem -Custom Flag ( If there is ever a flag on some building.) This would allow you to make your own Faction in the Starcraft Universe. Which, I would enjoy as I would like to make a Exiles of the Khala for Toss.