Read the Color of A Element of External Program

[newbie999]

There is a program to show up the price change.
And I want to detect any color change in a specific area, A(600,0) to B(900, 100).


Is that possible? Is it difficult?



Best regards,

[integralfx]

https://msdn.microsoft.com/en-us/library/windows/desktop/dd144909(v=vs.85).aspx