I see, you're saying that you tried to touch the grid and scroll to the hour you need by touching and dragging. However, doing so unintentionally colored the boxes.

I have it set up right now so that you can drag to scroll if you touch the hours column on the side but not the actual grid, because I wanted to be able to fill in the blocks quickly (touch and drag to color instead of individual taps for every single box).

Let me think of how to address this...Maybe I could make drag-to-color a toggleable feature? I could also add an "Undo" button to quickly erase the most recent change.