Labelled colors with comments

- comments describe the color of the preceding `string` element using Solarized’s naming scheme (see <http://ethanschoonover.com/solarized/#the-values>)
- many colors are from outside the official color palette; they are labelled `(nonstandard)` in their comments, but also list the closest official color name
Merge pull request #46 from Zearin/master

Add official Solarized color labels in comments