But, I do have one problem with a robe...
The Watchman robe to be exact. The watchmen are technically stealth based... and, I'm reminded of the French/Indian War (and, Revolutionary, if I'm not mistaken). I'm reminded of it because the British tend to wear bright red clothes, which would make them easy to spot at night. The connection I'm making is that it wouldn't make much sense for a stealth user to wear bright clothes.
If you plan to do a second version, I would recommend either making it darker and blend in with the background more (green and yellow would be a good combo, but, or switch it with a darker robe, like the Weapon Master, the Master, or the General robes.