A little history first. A few years ago I bought a '72 Cadillac Hearse. It came with a casket. The casket was a "scratch-n-dent" and was missing one of the lids. Last year I sold the hearse but kept the casket. Well, now we have a pool and my wife was having trouble finding a chair that lays completely flat for sunbathing that was affordable. I had the idea of building a solid lid for the casket. Now, I'm no carpenter so it isn't perfect. It's also not finished. Any suggestions on a paint, stain, covering for the top? Obviously black will get too hot