One day i was near the safehouse in the 2* island, i found this strange but nice Murale so i took a screenshot and it ended there.
some days ago i started GTA 3 and while doing the paramedic secondary i found the same Murale in the park with the Basket camp.
They almost the same, there's something blue on the GTA IV one but that's the same anyway.
This one is from GTA 3 http://imgur.com/tbjoIGd
while this is the one i found in GTA IV http://imgur.com/faPdO6J