@Percy

what is the are the icon set and wallpaper used in theme, it doesn't seem to apply, i added the theme using theme customizer coz it didn't appear in the theme settings.

I got it to work, just copied the content of the directory to /opt/usr/share/themes/beta_blue and not to /opt/usr/share/themes/beta_blue/beta_blue

also i got the icon pack used it's the AwOken theme pack applied by theme customizer

still i need to find the wallpapers used, any suggestion ?