If you have the stepladder, look to use it around the exit area.
If you don't, inspect the barrels very carefully and make sure you've looked at the tire in the middle of the entire area.
have the step ladder and still nothing popped up in the area its the last thing need T_T
Look up, on the opposite side of the lockers that you got the stepladder from.
thanks that was the last bit I was stuck on. I enjoyed the color puzzle
