Nice 'n neat. I like the colors but I think they would only be 'stealthy' in a coral reef. That said, I'm not a 40k codex thumper and I think you did a fine job on these.
Sweet! These look very sharp. I mean, yellow/blue is a little bright for a stealth team but these look so good it doesn't matter. The shade of blue or aqua you used was a good choice.