Google translate: So ändern Sie die Schriftgröße bei MediaPortal Clean HD Skin

Unfortunately, I don't know German.
I hope I have not violated the rules by writing in English

I'm using MediaPortal. Great plugin!
However, there is a problem. The problem is my eyesight. I don't see well enough.
How to change the font size in the Playlist MediaPortal plugin? It is a Clean_HD skin.
I guess it is possible in one of the .xml files.
Please give me specific instructions how to do it.
What is the name of the XML file where I need to do that?
What is the number of rows in which to change the font size?
If it is not possible to change the font size, give me a recommendation for another MediaPortal skin that has a larger font.
thanks you and all the best!

P.S.My box is ZGEMMA H7S