I bought some Bionicle from eBay recently which contained quite a few Bohrok and therefore quite a few Krana. While trying to work out which Krana came with with sets I found an unusual one. I split them into 3 groups of Bohrok - Bohrok Va - Bohrok Kal following several guides from online and ended up with this.
Using Bricklink to define colours for the different sets, they are as follows;
Flat Dark Gold
Pearl Dark Grey
Pearl Very Light Grey
I can't find anywhere that references a light gold krana. What have I found?