No. The background of your facial photo for a K-ETA application does not have to be white.
You must use a plain white or light-colored background without shadows, patterns, or other objects.
Your face should be centered and clearly visible in the photo, with your eyes open and looking directly at the camera.
Photos with overly colorful backgrounds or those that make your face difficult to identify may result in delays or rejection of your K-ETA application.
Therefore, make sure to check the background and visibility of your face before submitting your photo.