My experience is with motor homes. My first ws simply white tinted gel coat with vinyl decals. No paint codes. My last was full body paint. The paint codes were on a table inside a kitchen cabinet door. The current coach has a label affixed to the driver's side door jam.
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk TOAD