3 blue, 2 green, 4 red. Theres a poster in the lab that says it
on the top right when you enter the island
You find the dirty beaker inside the Steamworks Museum when you go all the way to the top right side.
The monsters on Steamworks are all mutations of plants on the island. They took over the island after being altered in the Research labs (Production Zone) to the right of the Hub. You battle them at several locations on the island. (see related question)
you go all the way to the right and the top is red
Go one building right of the Cantina on Main Street.
It is the section just right of Main Street.
There is a very old Dirty Beaker in the Steamworks Museum (far upper right). Use the machines and climb the vines to reach the beaker. You need this at the Greenhouse in the Laboratory (Production zone, right side of the island).
The trash bin is just to the right of the Cantina on Main Street.
if you go to the right you will see a place to put the dirty beaker
Enter steamworks island and go left. It's RIGHT THERE
The Steam Battery is in the garbage bin on the side of the Clockwork Cantina, which is just to your right when you enter the island.
The Steam Generator (to open the doors) is in the trash bin to the right of the Cantina.