There are numerous methods for recreating Zimmerit coating on German panzer models and water slide texture decals offer the easiest way to complete the task. This review covers one of such decal sets produced by DEF Model and designed for Zvezda’s Elefant kit: Elefant Zimmerit Coating Decal Set (DD35018).
This is partial text from the full article (usually with photos) at https://armorama.com/news/sd-kfz--184-elefant-zimmerit-coating-decal-set