Colorscripts bugfixes (one personal preference)

Hey phallus,

I was using your colorscripts (via their incorporation into nodiscc/scriptz, though I loathe that z so) and noticed a few "problems" (that being that blocks/dump-colors don't work with .Xresources, "tanks" doesn't have a terminating EOF string for bash to stop echoing on, and a few clear the screen (although that's more personal taste)). Anyway, the commits in this pull request fix those.

Cheers!