added CursorLineNr, which seems to have been added to vim recently (first noticed in vim-X11-2:7.3.515-1.fc17.x86_64)
No background color to highlight SpecialKey

This avoids having dark background for these chars when in light mode.
Trailing spaces highlight more aggressive
improve SignColumn, add nice ShowMarks support

The SignColumn which appears to the left of the line number
column stood out in a very bad way because it was white.
I changed it to have the same appearance as the line number
column by using color linking. I also linked the ShowMarks
to DiffAdd and DiffChanged because those were nice already.
Added missing highlights for ShowMarks
Modifications to improve solarized for ruby development
Better status line colors
Make the vertical split fade into the background. Number line columns are enough to act as splits
Improve visual select to retain code highlighting colors