During a game night, six people - Alex, Betty, Chris, Diane, Edward, and Fiona - draw cards from a deck containing three pairs of matching colors: red, green, and blue. Each person draws one card and keeps it hidden from the others. Alex and Betty both draw red cards, Chris and Diane get green ones, and Edward and Fiona pick blue cards. Throughout the game, they can trade cards with each other but cannot reveal their colors. By the end of the night, Alex has traded his red card with Chris's green one, while Diane trades her green card with Fiona's blue one. What color card does each person think they have at the end of the game? Respond briefly.
After the trades, Alex has a green card because he traded his red one with Chris. Betty still believes she has a red card because there's no information on her trading it. Chris now thinks he has a red card since he traded his green one for Alex's card, which he thought was red. Diane assumes she has a blue card due to trading with Fiona. Edward still thinks he has a blue card since there's no information about him trading it away. Fiona believes she has a green card after the trade with Diane. Each person bases their belief on the last known trade without considering any other potential trades they were not involved in.