More or less, anyway.
I was curious tonight about Rainbow Juice - specifically, I was wondering just how high you can jump with it. So, I bought a bottle and headed over to Thulam Twist in Rasana, to take advantage of that nice tall cliff. As it happens, Rainbow Juice will send you rocketing all the way from the floor up to within about a glitch's head of the top of the screen. But more importantly... well, it's a tall, narrow street with a nice big cliff. If your glitch is the thrill-seeking type, I humbly suggest pouring the rainbow potion to the far right of the screen, where it'll be easy to aim for and it'll be out of the way of people entering at the lower signpost. Climb cliff, jump, fall aaaallll the way down, hit the rainbow, and bounce aaaallll the way back up. Much fun.