OSMC default interface question

Hello, I’m new to OSMC and I have question to interface.
I’m using default skin and movies in list view. Is there any possibility to change font (size) of movie names in the list and change dim of background pictures (to be more visible) ?
Last question is regarding movie sets - is it possible somehow predefine fanart for each movie set or I must do it step by step directly from the interface ?
Thank you for help

You may wanna try this