Well... a friend of mine just visited last week with some prints from his RB - colour, mainly Protra I believe... they were just 8x10's and he was just getting his colour printing dialed in... but they were truly impressive. Before you know it, you will stick a roll of Velvia in it, just to see a slide that BIG!
But I can certainly relate, for the most part, 90% of my "work" is B&W. I just like it that way
Oh, I'm sure once I get some sort of darkroom of my own set up where I can start messing with colour prints, I'll start using the MF camera I get with colour film too. For right now though, unless I find someone in the area with a colour darkroom who'll let me have use of it every once in awhile, whatever printing I do myself is going to have to be in B&W