Little balls

Two animated characters, a blue one holding a flask and a yellow one wearing a green hat, stand at a table with a container of blue gel. The blue character pours liquid from the flask into the container, causing the yellow character to react with shifting expressions from anger to surprise. The scene is set in a dimly lit, purple-hued laboratory. The sequence ends with a close-up of the yellow character's face, now bathed in red light, showing a look of shock or alarm.