I'm only wanting to display numbers and a decimal point (for temperature display on a 16x2), is it possible to change the custom characters used in the library for a "rounded style"? - I haven't quite got my head around libraries yet...
Actually not possible. I made a trade off ugly looking for displaying all symbols. Each character is a 3*5 matrix of dots so you can't have one dot that is rounded on the bottom left and another on top left. There are other libraries out there that only do numbers with rounded corners and possibly dot and colon. Good luck!