玩法
猜顏色
猜出隱藏的顏色
Part of the picture has lost its color. Move the three dials until it looks right, then submit — the artwork repaints itself in the real color and you see how close you were.
找出不同
找出不同的顏色
Every tile is the same color except one. The grid grows and the difference shrinks as you climb.
顏色記憶
記住並配對顏色
Study a color, watch it disappear, then rebuild it from memory. The study time gets shorter each level.
Scoring
A guess is scored by how far it sits from the real color in perceptual terms — the same CIEDE2000 measure the app uses, not a naive comparison of slider positions. A perfect match is 100. Three stars means you were close on nearly every round.
Keyboard
Every round can be played without a mouse. Tab moves between the dials, the arrow keys turn the focused dial, and Enter submits.
How far the browser goes
The first ten levels of each mode are free here. Everything past them, along with the premium categories, lives in the iPhone app, where your progress and your place on the leaderboards are kept.