Red is the only action color and appears once per screen. The canvas turns warm so cream faces and the mascot sit in it. Every text pair below was computed.
Correct and incorrect always carry an icon and a word, so red and green never work alone. The highlight on a dark face is a sun underline with sun text, not a pale wash (the wash measured 1.2 : 1).
Two colors and a soft vignette. The glass chrome takes its tint from the atmosphere, and it crossfades over 380 ms while paging.