If you would like to put pineapple in your jello, I have good news for you. You can actually combine the two and get a yummy dessert ... but you have to use canned pineapple to prepare it. Jello contains gelatin (a protein, which is a processed version of collagen.
It's a cobalt oxide-aluminum oxide. Very costly and extraordinary stable pigment of pure blue colour discovered by Thenard thÃ©nard in. 1802
If the cobalt chloride paper turns colour from blue to pink, water (moisture) is present.o.   Cobalt chloride paper is used for testing the appearance of wate.  Whilst pH paper is used for testing the pH value of a particular  chemical/solution.