If you write a really basic Pixelbot, try
PHP Code:
PixelSearch ( left, top, right, bottom, color [, shade-variation] [, step]] )
For a really basic bot that should be enough
For the color just search the pala, and try to find an unique color with au3info, then include it in to the script.
Example:
PHP Code:
Do
$coord1 = PixelSearch ( left, top, right, bottom, color [, shade-variation] [, step]]
If Not @error Then
MouseMove($coord1, 0)
EndIf
Until Not @error
Hope it helps