Sam always seems to have a paint roller on hand to paint over her canvases and obliterate her work. The paint is always fresh and ready to apply at a moment's notice, never dried out, which is surprising since her decisions to paint over her canvases are always spontaneous, never pre-planned (which ready-to-go paint rollers would imply).
When Parker confesses to Sam, the shadow of a boom mic slides up and down her hair.