Clean previous themes definitions when loading a theme.
Clean up a bit.
Move some configuration to a file.
Show diff in the buffer fringe.
Don't show the user's home as a project.

Projectile thinks it's a project because .git lives there.
Use bbatsov's port of solarized.
Move solitary parens up.
Make show-paren highlight the expression.
Change color of project name and branch in mode-line.
Make the mode-line high contrast.
Use personal modification of solarized.
On second thought, do emphasize the indicators.