Severity of CVD varies by person, so I can't speak to your personal experience. However, I'm better at that same task than my color-normal spouse because I favor other cues that aren't gamed as heavily as colors in modern grocery stores. It's intentional practice for stores to use things like ambiguous lighting and colorful packaging to enhance the "expected" colors of slightly underripe fruit, which in turn has been bred to appear beautifully colored even if not ideally ripe or fresh. These tricks are statistically effective on color-normal people too.