I made the mistake of buying unfinished furniture with the intention of staining the items to fit my bedroom. The stain was supposed to be amber color but instead looks orange. I didn’t notice it until I had put the top coats on so I cant restain unless I sand

I recently moved and will be painting many rooms. I have high walls in the foyer that connect to the DR, LR and Family room. I’d like to use colors in all three rooms and a neutral in the main foyer. Where does the neutral end and the colors for