Make the first color the outermost scope, the 2nd color the next scope

The original behavior is a bit chaotic due to an interaction with the
max trimming function (and being backwards to boot)

![samplecolorsetup](https://cloud.githubusercontent.com/assets/271309/4832860/ce1a00c8-5f9f-11e4-902e-e74d3bf085fd.png)
![oldbehaviorvisualization](https://cloud.githubusercontent.com/assets/271309/4832862/d0f9d606-5f9f-11e4-9189-973a81b46eb6.png)
![newbehaviorvisualization](https://cloud.githubusercontent.com/assets/271309/4832863/d1098ac4-5f9f-11e4-92f8-5e737df1b14b.png)

need to `s/pairs/rpairs/` here