question on color depth default

[William Fragakis]

I see that the default lts.conf setting for color depth is commented
out.

Is that how it is upstream or a Fedora decision? Be enabling
(uncommenting)
X_COLOR_DEPTH=16
my glxgears framerates have doubled on an atom based thin client.

I'd rather not set the xorg settings for the server at 16 bit because it
is a high end card I use for non-LTSP purposes.

Thanks,
William