Stop swallowing keys (meta, in particular)

[mralexgray]

I noticed this when a makefile target launched minicom (a serial port monitoring thing), and I couldn't use the Esc + x stroke that is required to quit it. I double checked by running the same Makefile using "regular" make, and it worked fine. So, seems like - colormake is indeed swallowing the "meta" key (and possibly others).. and subsequently breaking make's (and my) workflow. :-(