Recognizing a color of a spot

[Ape]

So I want a macro, which waits for a color change in a specific spot and then click it. Example code under(just replace the GetColor-function):

Code:

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rep
(tab)  if(GetColor(100,100) = 123)
(tab)(tab)    lef 100,100

GetColor would be like this:

Code:

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input (x,y)
output (color)