prismatic light diffusing ceiling panels - polycarb? (Stockwell SW9)

size: 60X60cm. 12x painted cornflower (?) blue; 5 clear.. most completely intact (one of 12 with small damage to edge) Good for privacy screening; window or greenhouse shading;; or light thermal protection (being lightweight to fit & easily storable when not in use). Paint looks like is vinyl emulsion, so could possibly soak/scrub off ; or could overpaint as decorative panel. Light enough to take home on the bus!