Enter Interior Designer, right-click the installed furniture, choose a color, and press the payment button to save the change. [topic-1]

What to do

  • Install the furniture in the room first.
  • Open Interior Designer and right-click the item.
  • Choose the color, review the charge, and confirm payment.

Why this answer holds

Community instructions on both Reddit and Steam describe the same right-click color workflow and note that recoloring can cost money. [steam]

Version 1.0 check

Not every object exposes the same palette. Prices and whether a packed item keeps its custom color can vary by version.