Pink Gel Dye

It coats your gear in the same wet slime sheen the Slime Gun leaves on a player, tinted pink instead of blue. That is a surface effect rather than a recolor, so it lands very differently on every armor set and is worth testing on one piece before you commit a stack.

The base dye is easy enough to get from the Dye Trader. The pink half depends on Pinky, a rare slime variant that has to spawn on its own before you can kill it. There is no quick way to force that early, so most players end up with this dye by accident, long after they stopped wanting it.