Oh wow, that's good to hear!
I agree completely that the interactive elements were too hard to see, funnily enough, the juice bottle was originally the colour of the other bottles but I thought it was definitely too hard to see, so I made it the colour of the glowsticks.
Even then, it's too hard to see! I think it's also not helped by the fact that those 2 things are the only parts that are interactive so you probably aren't even looking for things to click on, and would only discover them by accident if you moused over them.
Thanks for the feedback!