http://countertops.rustoleumtransformations.com/

http://www.gianigranite.com/index.html

I think there is fairly wide range in cost depending on the materials you choose. What is the current countertop made of?

This is the best way, I think, and it does not involve the kitchen countertops very much at all. Step #1 Clear off the kitchen counters & then clean the counters. I know, it' a pain, but the cleaner and more cleared off the counters are, the better they'll look. Step #2 Buy a colorful rug for the kitchen's focal point in the work area. The focal point is usually the sink. The colorful rug should blend with your house / kitchen color & decor. The rug should have one color that dominates the other colors. So, even if the rug has many colors when you look at the rug, you think: this rug is mainly blue or mainly red etc. The rug can be a runner or oval etc doesn't matter. Step #3 Choose the complementary color of the rug's main color and buy a few vases, or pitchers etc in that color (think thrift shopping) & cluster them on a kitchen counter or on a window ledge. That's it. If you are not sure of what the complementary color might be Google: "what is the complementary color of blue (red etc)". If the rug is red, you'll buy green vases.