Hi, Shashi.
The difference between Color(0, 0, 255) used by the background frame and the Color(0, 0, ~216) captured by the robot is quite big. I guess the difference should be visible by the user, but if I am not missed something the window really draw color_blue=255, why the robot capture wrong color?Please let me know if there is any better logic to avoid tolerance based color comparison.
-- Best regards, Sergey.