Sebastian Sauer gives us an example of modifying a standard ggplot2 theme:
ggplot2is customizeable. Frankly, one can change a heap of details – not everything probably, but a lot. Of course, one can add a theme to the ggplot call, in order to change the theme. However, a more catch-it-all approach would be to change the standard theme of ggplot itself. In this post, we’ll investigate this option.
To date, I’ve only used themes others have created, but if you need to customize a theme, there’s a lot you can do here.