www.nico.schottelius.org/blog/change-colour-for-ls-to-work-with-bright-terminal-background.mdwn

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[[!meta title="How to change the colour of ls to work with bright terminal backgrounds"]]
## Introduction
I am using [rxvt-unicode](http://software.schmorp.de/pkg/rxvt-unicode.html)
as my terminal and prefer to use a bright background due to better
readability in the sun.
I have tried various colour themes
(including
[solarized](http://ethanschoonover.com/solarized) and
[solarized-light](https://github.com/yangzetian/xresources-color-solarized-light),
but was never satisfied, because of changes
they make to existing colour configurations for applications
like mutt, alot or irssi.
I am essentially using black as the foreground colour and
LightYellow2 as the background colour at the moment (which I inherit
from some very old xterm + [[!fvwm]]2 settings).
## Motivation
The problem with my current setup is that symbolic links are
show in **cyan** by ***ls*** on my system and thus are pretty much
unreadable, as you can see:
[[!img urxvt-before.png alt="urxvt with unreadable cyan colour"]]
## The solution
As the problem mainly arises by the use of ls, I initially thought
about modifying the **LS_COLORS** variable. However, as I frequently
login to servers that are variable does not effect the colour output
on the servers (and modifying AcceptEnv on all servers is also not
realistic).
As I do not want to have cyan output on my LightYellow2 background
at all, I thought about changing the colour cyan to black.
I found a nice colour table on [[!gentoowiki Rxvt-unicode#Color_theme]],
with description of colour number to name:
!black
*color0: #251f1f
*color8: #5e5e5e
!red
*color1: #eb4509
*color9: #eb4509
!green
*color2: #94e76b
*color10: #95e76b
!yellow
*color3: #ffac18
*color11: #ffac18
!blue
*color4: #46aede
*color12: #46aede
!magenta
*color5: #e32c57
*color13: #e32c57
!cyan
*color6: #d6dbac
*color14: #d6dbac
!white
*color7: #efefef
*color15: #efefef
## The result
So in the end, only the following entries in .Xresources are
required to make cyan symbolic links readable by changing
cyan to black:
URxvt.background: LightYellow2
URxvt.foreground: black
URxvt.color6: black
URxvt.color14: black
And this is how it finally looks like:
[[!img urxvt-after.png alt="urxvt with cyan changed to black"]]
## SEE ALSO
* [Terminal Colours](http://ciembor.github.io/4bit/)
* [[!archwiki X_resources]]
* [[!archwiki Rxvt-unicode]]
[[!tag terminal unix urxvt]]