Midnight Commander and Slackwares Pkgtool.

MC
Customizing mc to colours other than the default blue and white make it ideal for editing config files and bash scripts.   mc has features such as directory hotlist which make it very fast to work with. Is a ftp/nfs client and can examine the contents of zip files and packages.

mc's colour settings are stored in the ~/.mc/ini file of the users home directory. If you like this colour setup download the following ini file [colours] section and cat it onto your ini file.

Here's the colour section to download  --   "mccolour.txt"

Use the following copy and cat commands at the prompt to make a backup and then concatenate mc-colours.txt onto the ini file. Note that cat has two >> for append mode.

$  cp ~/.mc/ini ~/.mc/ini.bak
$  cat mccolour.txt >> ~/.mc/ini

The ~/.mc/ini does not exist untill mc has been run so if it is not there fire up mc to have it created.If the ini file already has a [color] section you will have to remove it with vi.

Use vi,elvis or vim editors to edit the ini file, don't use mcedit, kedit or gedit which will cause the file to bork the next time you start mc and be replaced by the default ini.
The mc (F1) help pages has a "Color" section which explains syntax used in the ini file.

pkgtool
this slackware tool is better when set to colours other than the default cyan and yellow (via /etc/dialogrc) in my view.

Download this file "dialogrc.txt" and as root use the following commands -

#  mv /etc/dialogrc /etc/dialogrc.bak
#  cp dialogrc.txt /etc/dialogrc

If you delete your dialogrc.bak you can get it from /a/pkgtools.tgz on the slackware disk.