CoordMode, Mouse
   CoordMode, Pixel

   Gui, -Caption +ToolWindow +AlwaysOnTop
   Options = FF0000 x-1 y-1|00FF00 x99 y-1|FFFF00 x-1 y99|0000FF x99 y99
   Loop, parse, Options, |
   {
      Gui, Add, Progress, % "background" A_LoopField " w102 h102 hwndhProgress" A_Index
      Control, ExStyle, -0x20000,, % "ahk_id" hProgress%A_Index%   ; WS_EX_STATICEDGE = 0x20000
   }
   Gui, Show, % "x" (A_ScreenWidth - 200)//2 " y" (A_ScreenHeight - 200)//2 " w200 h200"
   Sleep, 500

   Gui, 2:+LastFound -Caption +ToolWindow +Owner1
   Gui, 2:Color, Black
   WinSet, Transparent, 150

   PosX := (A_ScreenWidth - 100)//2
   PosY := (A_ScreenHeight - 100)//2

   Gui, 2:Show, x%PosX% y%PosY% w100 h100
   Sleep, 500
   SetTimer, PixelGetColor, 10

   Loop 4
   {
      MouseMove, PosX + (mod(A_Index, 2) ? 25 : 75), PosY + (A_Index > 2 ? 75 : 25)
      Sleep, 1000
   }
   OnMessage(0x201, "WM_LBUTTONDOWN")
   Return

PixelGetColor:
   MouseGetPos, X, Y
   PixelGetColor, Color, X, Y, RGB
   ToolTip, % Color
   Return

Esc:: ExitApp

WM_LBUTTONDOWN()
{
   PostMessage, WM_NCLBUTTONDOWN := 0xA1, HTCAPTION := 2
}