Different colored bars
Color blindness effects 1 in 12 men. Thats quite a big chunk of the population. I was just looking at the delivery graph and noticed there are two type of bars. Red and Green, to me they look almost identical. As if you used a 45% grey and a 50% for the bars. So subtley different they might as well be the same color. Perhaps you should pick different colors for the delivered and dropped bars?