Dunlop Purfort. Light as a feather, good grip, last well. In cold weather, welly slippers inside. Can't remember the make, they're blue and lovely and toasty, and you can leave them on as slippers in the house if you want so it doesn't make donning and removing your wellies too much of a chore.
Colour doesn't matter one jot for anything for me - except that I generally try to have a different colour and/or design to BH, so there's no mix-up or argument
Oh, I did have a pair of Le Chameau once, they were superb, best grip of any welly I ever had and very comfortable to walk in too. I probably will never forgive the friend who borrowed them to row in and ruined them