A hand holds a translucent reusable cup with a red lid. The cup is angled to the right and filled with a yellowish liquid. The cup has a printed scale indicating "SWEETNESS LEVEL" with markers. The cup displays a color-changing effect, transitioning from red at the bottom to orange, yellow, and a faint green/blue hue towards the top. The background is blurred and shows greenery, a tree, a white wall, and a cloudy sky.