^^^ No, that is not what he is asking. Darts are for the body of the shirt. Shoulders are a different matter. If something doesn't fit in the shoulders it means it doesn't fit and their isn't much a tailor can do about it.
I drank the style forum cool aid on the superiority of blue shirts, but recently realized that I actually look good in a white shirt and have started to reintegrate them. I am not so restrained as to just limit myself to white/white square all the time though.
Sure, in this case of a pink shirt with that tie isn't tasteful. But sometimes I think too much about it (like a paisley square with just a hint of brown in it with a brown and navy tie) and I end up just saying fuck it, if I'm too matchy I'm too matchy. I am very much a neophyte though.