Act as a celestial architect with millennia of experience designing divine realms. Develop a world where the sky is a living canvas for gods, who paint their will, emotions, and prophecies across the heavens. Describe [THE CULTURAL IMPACT] of these ever-changing celestial displays, [THE RULES] governing which gods can paint and when, and [THE MORTAL INTERPRETATIONS] of these divine artworks. Include details like pigment sources (stardust, soul-light), celestial brushes (comet tails, solar flares), and how mortals might interact with or even influence the sky-canvas through rituals, sacrifices, or forbidden sky-mirroring magic.