reply to pinkpill.
looked up what you said, found if, quote, (In the Wizard of Oz, food coloring was tried, even liquid candy, both without success. The colors were too tame, and much too tasty. Finally, a paste of Jell-O powder was found acceptable.) If you read it right it said FOOD COLOURING WAS TRIED -BOTH WITHOUT THAT IS WITHOUT SUCCESS,,, So as i said food colouring is not good, jell-o can contain natural and synthethic food colouring, i guess that they must of used natural food colouring which was contained in the jell-o, just enough to obtain the colour for the film, All that i was pointing out is that synthethic is not as safe to use as natural, and that the numbers that i put were considered not safe, also food colouring has a use by date,
all the best
Martyn
www.cheekychipmunksse.com