...I'm quite sure there are no genuine decal replacements, that has been discussed many times already on the forum. Remember all those restoration brothers asking for it!
From previous threads, I would think that once you have "custom painted" your guitar, EBMM will not be interested in supplying you with one of their logos to go on it.
There are fakes available no doubt, but I wouldn't dream of suggesting that as it's a slippery path