Scrolls workspaces w/ mousewheel in XMonad
Completely rewrites xterm-colortest

Only prints the list of hex codes for the set of colors.
- Pipe to something for it to be useful, e.g.:
    ```sh
    xterm-colortest \
    | xargs -iZ convert -size 10x10 xc:Z miff:- \
    | montage -mode concatenate - x:
    ```

Set colors via env var (`$COLORS`).
- only supports 88 / 256
Adds `clj` script change from hp

Not sure whether it works, but looks like it was trying to preserve the
first script argument in the list of all cli args.