Some, but not all house mods I install, have random pieces of furniture or walls or w/e that are completely recoloured to magenta (more pink actually). For example, in one, the smoke coming out of the chimney was pink and so was a couch... Very strange. Anybody know whats up?

It means you have missing textures. Either you haven't installed the mod properly (most likely) or the mod author has left them out of the package (Highly unlikely depending on the mod author). How are you installing your mods? There are three ways, manually (Not reccomended since it's difficult to track what belongs to what mod, OBMM (Better but poses problems if you uninstall mods because it might remove something another mod needs to function properly), and BAIN( Highly reccomended, Wrye Bash's installer tracks all files and automatically replaces missing files when you uninstall a mod)

Artorius.

Ok thanks bro i will look into obmm and bain