I don't know that I really have much to add about the color cycling; seems like everyone's covered the topic pretty well! Delightful to see so many people interested in these old techniques.
The thing that unfortunately gets a little lost in the demo is the way in which the color cycling (along with clever color palette fading and some sprite animation) was used as a means to create a world that looked like it was really alive for the whole month long… When you started the app up in the morning, you saw the sunrise. If you tuned in at night, you could see the fireflies. Each day the moon progressed in its cycle. Some days it was sunny, others it rained. Clouds slowly marched across the sky. The whole effect was quite enchanting. Regardless of if we use color cycling or not, I'd love to do something like that again.
The thing that unfortunately gets a little lost in the demo is the way in which the color cycling (along with clever color palette fading and some sprite animation) was used as a means to create a world that looked like it was really alive for the whole month long… When you started the app up in the morning, you saw the sunrise. If you tuned in at night, you could see the fireflies. Each day the moon progressed in its cycle. Some days it was sunny, others it rained. Clouds slowly marched across the sky. The whole effect was quite enchanting. Regardless of if we use color cycling or not, I'd love to do something like that again.