PC Gamer has a list of the 10 most nonsensical puzzles in adventure games today (only 10?):
Two things here. First, water is not in fact bright blue. Second, that's a green glass bottle, so even if it was, it wouldn't be. This being Limbo of the Lost though, of course it gets worse. Because we need it to glow green, the solution is to mix in some yellow saffron. Because blue and yellow make green, right?