Sometimes it pays to fuzz about small color differences, sometimes it doesn’t.
Suppose you have two identical teapots, both white. If one is in the kitchen and the other in the living room, you wouldn’t be able to tell if they are exactly the same shade of white. Could be that they have different production dates, causing a slight difference in color. You could say that in this case, any small difference in color between the two pots is irrelevant.