Gene...Check out SwissTrax floor system. They have several styles of tiles that all snap in place without adhesives. Specifically, checkout the RibTrax...it is made of recycled plastics and will support 20,000 lbs per square inch. It is vented and debris falls through and can be cleaned up with a shop vac. More importantly, the vents/slots allow evaporation if it gets wet...no mold. I have had this floor installed in my Colorado home and will be installing one in TV once I get there full time in Aug.
Check it out, I think you will like it! Also, many colors.
Here is a link:
Swisstrax Garage Flooring - Interlocking Flooring - Modular Flooring - Garage Floor Tiles - Rubber Floor Tiles
BTF2008