Upvoted for Grey Belt. The other two are terrible. Grey Belt on the other hand, is a clear image, very short, and has the added advantage of (possibly) being immediately understood by ~1/2 of the general population (at least next to a good logo).
Upvoted for Grey Belt. The other two are terrible. Grey Belt on the other hand, is a clear image, very short, and has the added advantage of (possibly) being immediately understood by ~1/2 of the general population (at least next to a good logo).