I decided to be creative for the floor, choosing a diagonal checkerboard of the standard (in-stock) colors I found at Home Depot. I was afraid the white was too bright and the beige too dark!
I found an excellent demo from Armstrong floors on Youtube which I watched several times. It reminded me that one had to start in the middle of the floor and work to the edges. There were wonderful geometry-like steps to make a perfect diagonal starting from the middle, and they worked perfectly. I just wish I'd paid more attention to which half of the floor to start on. I spread the glue on the back half of the room and waited. And waited. And waited for it to be tacky-dry enough to start. Then laid the tiles you see. Don't they look wonderful?
So, the next step is to spread glue on the rest of the floor. Wait for it to dry enough. And again, go back to the middle to lay my next tiles.
Are you asking yourself how the @#$^$# am I going to get BACK to the middle, across that very strong glue? I sure am. Stay tuned. I think this project is stretching out a bit longer than I had hoped.