That's pure nonsense, it does not work the other way around.
Only mediocre players (or workers of any area) would consider this a factor, even if the smallest one.
Not come to a club like Liverpool because the shirt is bad becoming a factor in choosing the club or not? If someone really did that (and would never happen in high professional level like dealing with Liverpool) all they would be doing is telling you they know nothing about football, the work they do and are clearly stupid. And nobody at any club needs a person who would judge a club for the shirt's look as a factor for a professional decision.