Adding nullify method to set empty string to NULL.
DRYing up the SettingsController to make it easier to work with.
Update and removing old AppearanceForm validation file.
Adding new interaction color settings.
Updates to allow for hover effects on buttons.
Bug fix.
Changing name of color seeder.
Changing seeder file name.
Merge pull request #559 from weerd/updating-custom-color-output

Updating custom color output