Roughly what you see on the white: faint opposite colors, and the flag is red, white and blue.
Tired eyes
Flag afterimage
Start the timer and stare at the middle of the flag until it turns white. What do you see?
The flag turns red, white and blue.
Why? The same tired cells: green turns into red, black into white, yellow into blue. Try drawing Nepal’s flag in its opposite colors.
Picture: Mike, Public domain · Wikipedia(opens in a new tab)