When I lived in London a glucose based "health drink" called Lucozade, as it's gimmic, came wrapped in an 85 Orange celophane that could be unwound and used as a filter gel to turn White (c6500K) flourecence into warm near Halogen 3500K. Is this still available, for if so I'll get my Mum to buy some and send me the wrappers, as it was about 90 cents US a bottle.