you could probably make your own with labels fairly simply.. heres 5 minutes to make 3 color picker
#include <StaticConstants.au3>
#include <GUIConstantsEx.au3>
GuiCreate("3 color picker" , 320 , 100)
$LBL_red = GUICtrlCreateLabel("" , 0, 0 , 100, 100)
GUICtrlSetBkColor(-1 , 0xFF0000)
$LBL_green = GUICtrlCreateLabel("" , 110, 0 , 100, 100)
GUICtrlSetBkColor(-1 , 0x00FF00)
$LBL_blue = GUICtrlCreateLabel("" , 220, 0 , 100, 100)
GUICtrlSetBkColor(-1 , 0x0000FF)
guisetstate()
While 1
Switch GUIGetMsg()
Case $GUI_EVENT_PrimaryDown
Case $LBL_blue
msgbox(0, '' , "You Picked Blue")
Case $LBL_green
msgbox(0, '' , "You Picked Green")
Case $LBL_red
msgbox(0, '' , "You Picked Red")
Case $GUI_EVENT_CLOSE
Exit
EndSwitch
WEnd