Ok...
I tryed now this skin.

but nothing going on. No skin availaible.
Here my sys.txt:
[rawdisplay]
driver=gdi
screen_xy="auto"
;screen_xy="1024_768:1920x1080/1080x1920:fullscreen"
;screen_xy="1024_768:1920x1104/1200x1824:fullscreen"
highres=2
stretch=1