Thanks for downloading my livery! 
Features: Grey 4477th livery with yellow outlined stars and (working) tac numbers.
Credits: Original livery: VVS Grey by LNS; permission to edit (https://forums.eagle.ru/showpost.php?p=2943873&postcount=2). All edits were made by me using Photoshop.

Installation:
Place 4477th TES folder into DCS World\CoreMods\aircraft\MiG-21BIS\Liveries\MiG-21Bis
Place/compress the .dds file from the TacNumbers folder into DCS World\CoreMods\aircraft\MiG-21BIS\Textures\MiG-21Bis_TacNumbers.zip
IMPORTANT: DO NOT place/compress the entire TacNumbers folder into the MiG-21Bis_TacNumbers.zip this will cause the TacNumbers not to work
Enjoy!