Another small yet pleasant modification option is to change the look of the mixer faders.
A retro option, “cheap plastic”:
Download link: mixer_fader.tif.zip
A minor color modification and you have even more cheaper ones:
Download for the latter and some others (green, red) here.
For those who wish to have a modern option:
All these mods by Lee Wilson. Collection likely to expand also by others; click on the “faders” tag below!