the API GetSysColor will help:
; API - GetSysColor ; Userlibs ; ================================== ; .lib "user32.dll" ; GetSysColor%(index%):"GetSysColor" ; ================================== Const COLOR_3DDKSHADOW=21 Const COLOR_3DFACE=15 Const COLOR_3DHIGHLIGHT=20 Const COLOR_3DHILIGHT=20 Const COLOR_3DLIGHT=22 Const COLOR_3DSHADOW=16 Const COLOR_ACTIVEBORDER=10 Const COLOR_ACTIVECAPTION=2 Const COLOR_ADD=712 Const COLOR_ADJ_MAX=100 Const COLOR_ADJ_MIN=-100 Const COLOR_APPWORKSPACE=12 Const COLOR_BACKGROUND=1 Const COLOR_BLUE=708 Const COLOR_BLUEACCEL=728 Const COLOR_BOX1=720 Const COLOR_BTNFACE=15 Const COLOR_BTNHIGHLIGHT=20 Const COLOR_BTNHILIGHT=20 Const COLOR_BTNSHADOW=16 Const COLOR_BTNTEXT=18 Const COLOR_CAPTIONTEXT=9 Const COLOR_CURRENT=709 Const COLOR_CUSTOM1=721 Const COLOR_DESKTOP=1 Const COLOR_ELEMENT=716 Const COLOR_GRADIENTACTIVECAPTION=27 Const COLOR_GRADIENTINACTIVECAPTION=28 Const COLOR_GRAYTEXT=17 Const COLOR_GREEN=707 Const COLOR_GREENACCEL=727 Const COLOR_HIGHLIGHT=13 Const COLOR_HIGHLIGHTTEXT=14 Const COLOR_HOTLIGHT=26 Const COLOR_HUE=703 Const COLOR_HUEACCEL=723 Const COLOR_HUESCROLL=700 Const COLOR_INACTIVEBORDER=11 Const COLOR_INACTIVECAPTION=3 Const COLOR_INACTIVECAPTIONTEXT=19 Const COLOR_INFOBK=24 Const COLOR_INFOTEXT=23 Const COLOR_LUM=705 Const COLOR_LUMACCEL=725 Const COLOR_LUMSCROLL=702 Const COLOR_MATCH_VERSION=$200 Const COLOR_MENU=4 Const COLOR_MENUTEXT=7 Const COLOR_MIX=719 Const COLOR_NO_TRANSPARENT=$FFFFFFFF Const COLOR_PALETTE=718 Const COLOR_RAINBOW=710 Const COLOR_RED=706 Const COLOR_REDACCEL=726 Const COLOR_SAMPLES=717 Const COLOR_SAT=704 Const COLOR_SATACCEL=724 Const COLOR_SATSCROLL=701 Const COLOR_SAVE=711 Const COLOR_SCHEMES=715 Const COLOR_SCROLLBAR=0 Const COLOR_SOLID=713 Const COLOR_SOLID_LEFT=730 Const COLOR_SOLID_RIGHT=731 Const COLOR_TUNE=714 Const COLOR_WINDOW=5 Const COLOR_WINDOWFRAME=6 Const COLOR_WINDOWTEXT=8 ; example col=GetSysColor(COLOR_DESKTOP) r=col And $ff g=col Shr 8 And $ff b=col Shr 16 And $ff Notify "Desktop Color (RGB) = "+r+", "+g+", "+b End