At the chamber level 39 to change to green skull.
Touch the skull in front of the door so that all change color to green. For ease I give the numbers to the skull that must be in touch. Touch the the numbers in this sequence 1 2 3 4 5 6 7 8 and hit the door to open.
At this level of game play, press the left pane so that people jumped to the length of each box.
Now continue to the Chamber Level 41 Explanation, or back to the Level 38 on 100 Chamber Solution