Honey honey, wake up! New cat dropped!

In the open world RPG “Caves of Qud”, the player stumbles across raycats out in the world. TIL what they reference!

Better proposal: text that becomes visible placed in an area people are known to look frequently.

The colour changing cat is useless without the accompanying song: https://www.youtube.com/watch?v=amn3kn0XPLQ