First off, I love the game! It's a really fun game. However, there are some things that it's not very obvious to distinguish... Looking at charging the power-ups, they start off as blue (empty) and go to green (full). However, when it gets close to green, it's hard to tell if it's fully charged or almost charged. While trying to get three stars, I often click on it thinking it's charged, but it's not. Will all of the cascading, exploding and other stuff going on, it's easy to miss that charged soun...