It will be two colors. Not sure which two, but a dark for the background and a lighter for the foreground. THinking kelly green maybe for the background, and grey letters.
Ok, ok. So out of my pole of 3 people, 66% hated my design. I still like it and may go with it in the future.
Next idea. And I really like this one. You're going to have to use your imagination... it's a bit rough. The middle thing would actually look like a CA licence plate, and the date on the plate (if its possible, it may be too small) will be the date I started caching. The background would be grey, and I'm not sure on the color of the letters yet. Oh, and the letters would be a more flowy, almost cursive font. The thing in the back is a road.