Not everyone catches this little gag in our film, it goes by pretty fast, but you can catch it at 1:14. I did the lighting in this shot, Uri did the comp, and then I painted the milk residue and drop animation in photoshop to layer back on top and finish off the shot. Since Blue is really the only thing that moves in the shot we were able to simply layer it on instead of having to map it or anything. For consistency, the drop residue was painted in and then duplicated and erased as I animated. Also, her refraction in the mug is a total cheat, which let us get it to look the way we wanted.