Easy as Pumpkin Pie

Easy as Pumpkin Pie is a location-based challenge in Bloody Harvest. 2019 seasonal event inBorderlands 3. To complete this challenge, pumpkin puzzle must be solved.

Background
There are four colored skulls hanging on the chains. Pulling them in the correct order grants access to previously sealed off area with one red chest, one grey chest, and number of safe boxes to loot.

Strategy
There's a set of stairs leading to the room with colored skulls, with four jack 'o lanterns sitting on top of pillars. Looking at the lanterns from the stairs side, and observing color of their lights provides the clue. Correct pattern is from left to right, and is different for each visit.