Build / Walls / Floors: Inert States – Sims 1 Nostalgia Collection by cgLizard – Mod The Sims 4.
It is a base game standalone wallpaper, which includes originals “Inert States” and “Sterile Style” and 4 new swatches (Blossom, Lila, Mono and Vanilla), giving you in total 6 swatches. Useful for those cheap vintage student housing vibes!