Absolutely LOVE this program. I think it's amazing for setting up GM particles and I'd probably have gone mad without it. My biggest wishlist item would be a way to do random colours (right now, to achieve this I'm spawning particles individually in Step, using a random colour, and every time I need to do this I forget how to and have to look it up so if Geon could export code for that too (even commented out) it'd be super handy for me lol). Having a way to preview random colours would be a help, if at all possible.
Anyway though, I love it and I'm really glad I have it. It's a MUST HAVE for anyone using GameMaker. Thanks for making it!