Drag glass from the tray onto the window. Fill a row or column to clear it.
Light rays: the jewel at the edge of each line is its ray colour. Clear a line all in that colour for a Radiant bonus, 6 or more for Bright, or all one other colour for Pure.
Daylight (the rose window) fades with every piece. Clears, streaks and radiance bring it back. If it goes dark, the game ends.
Streaks: keep clearing at least once every 3 pieces to raise the multiplier.
Lead knots appear as the day goes on. They take two clears to break.