start: only log in color mode when stdout is a tty
start: only log in color mode when stdout is a tty

For the most part, people are looking at logs in ~/.xsession-errors, which
is not a tty. let's not spew a bunch of color changing control codes there.

Signed-off-by: Tycho Andersen <6b523322678240882acbb4da5312a12d8cd0082d@tycho.pizza>

qtile/qtile,qtile/qtile,ramnes/qtile,ramnes/qtile