Craig,
When I frist started out doing shows, I spent hours,trying to pick out a nice mat, that had the same color or complimented the image and then the frames! Now, I have a chunky black metal frame( I buy the parts and assemble them myself and a white mat, usually a double mat and that's it.
When I did the shows, people would ask if I could change the mat to another color, to match their sofa,walls,carpet and I know I lost sales because my choice of color, wasn't their choice!
So keep it simple and always offer the image, along as framed, as a print only and you'll increase your sales!
Rich