I'm on my second order of samples from Formica (technically, third as they only allowed 5 samples per request, so I requested 5 and 4 the first time around and they shipped them together).
Wilsonart has a nifty feature where you can plug in a selection of their countertop colors onto a kitchen layout, as well as change the wall, floor and cabinet colors. I spent a long time playing around with it.
I decided I didn't like the high gloss as it reflected too much light. It also gave me some ideas on lighter colors, as I was also leaning towards darker (blacks and greys) colors.
While ETI will not use Wilsonart products (even if you supply it yourself), you can play around with their visualizer and it can give you some ideas on what you might like. I decided not to go with the purple walls and teal countertop.
I figure once I decide on the countertop I can then figure out fabric and flooring.
I do like the black handles and hinges idea if you're using a darker countertop. Although, so far my favorite has been Denim Canvas from Formica (And Cloud 9 from Wilsonart, but I have to pass on that one, unfortunately.)