Replaced nonstandard colors for “base01” with official Solarized value
Replaced nonstandard colors for “base00” with official Solarized value
Replaced nonstandard colors for “base0” with official Solarized value (except `caret`)
Replaced nonstandard colors for “base1” with official Solarized value
Replaced *most* nonstandard colors for “base2” with official Solarized value

The nonstandard color `#e0eddd` is also closest to base2, but its use is in `diff: header` and `Markdown: linebreak`.

I’m not sure about the diff, so I’m leaving it alone.  As for Markdown, I don’t know if that is supposed to color the line breaks when you have “invisibles” turned on, so I left it alone.
Replaced *most* nonstandard colors for “yellow” with official Solarized value

I left `Markdown: Linebreak` alone, because I didn’t know if it’s for invisible characters.

Replaced (forgotten) nonstandard “yellow” colors to official Solarized value
Replaced nonstandard colors for “orange” with official Solarized value
Replaced nonstandard colors for “red” with official Solarized value

From 8 reds down to 1!  ☺
Replaced nonstandard colors for “violet” with official Solarized value
Replaced nonstandard colors for “cyan” with official Solarized value
Replaced nonstandard colors for “green” with official Solarized value
Merge pull request #47 from Zearin/color-cleanup

Replaced (most) nonstandard colors with official Solarized color values