Is your question about a pattern or fabric? If fabric, there are lots of camo pattern fabrics that you can mix with coordinating solid colors in a quilt. For patterns, I would stick with something simple because the camo pattern fabric will be somewhat 'busy', so a simple D9P or Rail Fence or Warm Wishes would work well, using larger size block pieces. Google 'Camo Quilt' and you will see several images to get some ideas working. And since he lives in Hawaii, I would stick to cottons and keep the batting on the lighter side, doesn't need a super warm quilt there!