Code:
on ^*:text:*:*:{
  haltdef
  if $count($nick(#,$nick).pnick,@) { var %colour 04 }
  if $count($nick(#,$nick).pnick,+) { var %colour 03 }
  if $chan { echo -ti16 $v1 %colour < $nick > $1- }
  elseif $query($nick) { echo -ti16 $v1 %colour < $nick > $1- }
}

@ (Red)
+ (Green)
users (Blue)

I can not make normal users blue =o/