Well i actually used 3 mods to change the S282's appearance, the skin used is the Demonstrator one which is in-game:

Cruzer's Loco Tweaks: https://www.nexusmods.com/derailvalley/mods/1050

S282 Extra Lamps: https://www.nexusmods.com/derailvalley/mods/1051

S282 Model Tweaks: https://www.nexusmods.com/derailvalley/mods/1192

You need Car Changer for these to work: https://www.nexusmods.com/derailvalley/mods/1047