Rewrote the color scheme to allow for more customization. There are now options for contrast, background contrast, bold, underline, etc. The presets that exist now are Light, LightBright, White, WhiteBright, Dark, DarkDim, Black, and BlackDim. Light and Dark exist from previous versions, whereas White and Black are new. The Bright variants for light are lower contrast options for the light background. Also put color files for iTerm2 and PuTTY on Github.
Version 7 has unified the 256 color terminal and GUI versions (the GUI version only uses colors available on the 256 color terminal). The overall colors were also toned down a little bit (light version is now a light gray instead of white and the dark version is slightly lighter) to make it easier on the eyes.
Switched around some of the main highlight colors. Instead of using a green for constants, I switched it to be the yellow/orange. This makes constants more distinguishable from other highlights (identifier, statement, preproc, and type are now all some sort of blue or green). Also tweaked a few other settings. The "blue" style is kind of back, but is actually just the dark style with a more blue background.
Finished making changes to the light version. Also added a blue variant of the normal, dark scheme. Removed the non-primary highlight groups (Label, Operator, etc) to make the file a little smaller. Also added commands to change between the different schemes (LuciusLight, LuciusDark, LuciusBlue).