Prism Postage

Complete a stained-glass postage image with five patterned stamps. A shape that fits can still have its colors reversed: rotate both the piece and its internal pixels. Choose Window, Flare, Pin, Ribbon or Tab; each may be placed once, in any order. Rotating moves its A/B colors with the geometry. Every covered pixel must match its small target label; overlaps and mismatches reject freely. To repair, select the already-placed stamp by name then Lift; every cell of that piece returns to inventory. Eight committed actions, five placements for a clean solution. Undo also restores the previous inventory and canvas. Preview text shows the colors of the selected stamp.