tools: Colorize squisher and opticharger

Since we may/have colorized the entire build process, we might as well colorize these.
PS4: replace all printf's in squisher with echo
PS5: use echo correctly and remove set -e;; not for bash and caused failure
PS6: Remove -e from echo...its not needed after all

Signed-off-by: BMc08GT <bmc08gt.teamb00sted@gmail.com>
Change-Id: I0ba5c33e81098d7747d87f466cd7d335b2bf2ae3