What do you think they mean by an offer that is appropriate?
The seller obviously have a minimum price in mind that they want. If I wanted it I would offer what I think would be fair (can't say until I see at least a picture of the range), and if they wanted more then they will have to sell it to someone else.
I'm betting he would never notice Robert and if he did you could just say, " why it has always been pink"!!
Or I could says "Huh, well what color did you think it was?" Oh I'm an evil boyfriend, LOL.