Clears Highlights/Colors from your treebar/switchbar.
Simple little snippet but it always helps me after being idle for a long time. Just type /chall to reset :)

/chl clears highlights for the active network.
/chall clears highlights for all networks
Or just right click channel or status and goto Clear Highlights.

What is cleared?:

• Window(ie. Message Window,Status Window,etc.)
  All @windows, All channels, All Queries

Just ignore the $ :P
I know it's undocumented but at this point in the script I was just going to make an alias that did the same thing as $.
They should just document this identifier already!

;ClearHighlights by Ford_Lawnmower irc.geekshed.net #Script-Help
menu channel,status,menubar {
  Clear Highlights
  .All:chall
  .$network:chl
}
alias CHAll scon -a CHL
alias CHL {
  tokenize 7 window *window,0 *window,window 0 chan 0query 0
  ClThis $*
}
alias -l ClHls window -g0 $qt([ $+($,$1) $+ ( [ $2- ] ) ])
alias -l ClThis {
  var %a $1, %c $3
  noop $regsubex($str(.,[ $+($,$1) $+ ( [ $2 ] ) ]),/\./g,$ClHls(%a,%c,\n))
}