@Substring yes, it's a DAC+. Hahah noo, I am really satisfied with these digital vol+- buttons 😄 a oldschool button would destroy the look and feel, haha 😄
and the script works like a charm
But thanks for the info 😉

2 years asking the author to make a conversion.
It seems to me that if you want the theme, you will have to change to Retropie.