Have a customer who's been bringing in about one small item per year since 2004. Never wants to spend much and average ticket is only between $60 and $75. Only problem I've had with her is that she's very slow to pick up and finish paying. I wasn't in the store today but got a call from my employee that the customer said she didn't like the fame color (a blue that she picked out despite my efforts to steer her to a black). Now she wants a black frame but doesn't want to pay any extra for the exchange. If we were to be switching a black for a black, I might not mind too much. But the blue she picked isn't something I'll easily be able to sell off. So why should I have to eat this when SHE made the choice to start with? I know she'll probably bad mouth my business, however, if I don't give in to her demands. What would you do and why? Thanks in advance for your input!