Create macro to finding pixel


i have 6 point dot on screen:
in any giving time 5 dot will stay black and 1 will change her color to green than yellow and than green and so on, the color changing will be very fast (the duration that the dot will chance her color will be from 1 second to 60 second randomly until she will be black again)

i need help to create macro to finding pixel (not by finding image)
to locate the dot that change her color and store in clipboard her coordinate

and store in new clipboard how long she did not change her color
(how many seconds she did not be in color black)


all dot are one pixel