These are the Virtual Blue Spectres jet Team "Winter's Chill" paint schemes used after the 2018 season in celebration of the holidays and new year. Like the original element skin, these paints were created by Raptor, an official VBSJT member.
https://www.vbsjt.com/
Install:
1. unzip the file
2. copy and paste the folder to:
CoreMods\aircraft\L-39\Liveries\L-39C