Grey, crushed velvet, fake crystals lighting, yellow pine, carpet, flooring that isn’t real wood or tiles if a bathroom/bootroom, kitchen.
Houses without books, printed canvas, photographs scattered everywhere or on the walls, prefer smaller framed photos grouped together on one piece of furniture, slogans on walls, fake panelling, big bright pattered wallpaper, big televisions that are the focus point of a room, kitchen islands, corner sofas.
Houses I’ve admired are ones that looked lived in, scattered books, original art (this can be bought fairly cheaply at student shows), mix of antique and new furniture, pattern, lots of colour in soft furnishings like sofas and rugs etc.