I've gone in and changed all the colors to combinations I find easier to look at and to read. Also, font sizes are customizable in small increments and independently for each different view. What I really like is being able to look at the month view and get all the information I need for a quick overview. When I was using the standard Android calendar, I used the Agenda view almost exclusively. Now I use Agenda, Week, and Month each a lot, and they are each customized with different colors and font sizes. Overall, this is just a dynamite app.