This custom livery is for the MB-339APAN, for it to be available in mission editor, assign your MB-339APAN aircraft to the UK.
This is a fictional livery, inspired by various Red Arrows liveries.
Unpack .zip and install folder 'RAF RA' to...
Saved Games\YOUR DCS FOLDER\Liveries\MB-339APAN\
This is my first attempt to create a custom livery for a DCS airframe so, please, don't be too harsh!!!