What does the color puzzle in Lara Croft: Tomb Raider

2018-03-12 06:55:39

In Lara Croft : Tomb Raider there is a scene where the floor falls apart and she had to put two color stones in a hole to prevent it. There are several different color stones and at first she put one by one each and it fails to stop the falling floor.

Then she puts two stones together and stops the falling of floor, so how did she figure it out? and what was the puzzle there?