you don't HAVE to press ctrl + k and then right click the color to change it.
You could do:
/color 00 $rgb(0,0,0)
which would change the first color in the ctrl + k dialog to black instead of white.
If you decide to change several colors and suddenly want to go back to the old ones you could reset them with:
alias coloreset {
var %i = 0
while %i < 16 { color -r %i | inc %i }
}
