Undocumented settings

[Iain Morgan]

Hi,

I stumbled across the color:dir-colors and color:use-color settings
earlier today with 3.7.14. These aren't mentioned in the man page, nor
is the use of LS_COLORS mentioned in the ENVIRONMENT section.

For those that have issues with colorized output, due to color blindness
etc, it would be good to document these.

-- 
Iain Morgan