[ohashi]

I'm seeing it on the SERP results on the right hand side for number colors. See: http://i.imgur.com/v64bfWa.png

[itrinity]

There are multiple shades from green to red.

[ohashi]

So in this instance, is the color indicating how competitive the sites are for the term? in general? It's obviously a ranked list, so presumably they would be in descending order for that term.