Color is too complicated to worry me much past green, brown, or black.
Just think how long it will take to dial in the correct color and then what if there is another shade that would produce even better? Are you going to stop fishing what is working to gamble on what may or may not work 1% more?
Will green pumpkin with red flakes be better than black flakes or purple or a mix, what if instead of green pumpkin they prefer watermellon with orange flakes?
Too many combinations to be able to ever know that you're using the perfect color, by the time you've tried them all the day is done or weather pattern changed or more fish moved in or a thousand other variables.
Color matters, but you will typically just luck into using the exact right color so I wouldn't sweat it too much.