Here is my second wallpaper and icons mod for the PMDG 737-800 UFT, Ryanair for the Electronic Flight bag and Performance Tool apps.
Don´t forget to backup the Assets folder mentioned below BEFORE you owerwrite the original files!
In case you want to go back to the original background and icons.
INSTALLATION: Copy the content (three files) in folder Ryanair EFB to ...\Community\pmdg-aircraft-738\html_ui\Pages\VCockpit\Instruments\PMDGTablet\pmdg-737-800\Assets
If you want use it for another version of the PMDG 737, just look for Assets folder under your particular version( i.e pmdg-737-700\Assets)