Again, i am going to give everyone the privelege of my opinion
Grey shirts are not a good idea. We have been wearing them for years up in Canada. The major problem is that someone buys their shirt from honigs, another buys a cliff keen shirt. They will most likely vary in colour. How do you think it will look if everyone on a 3-man crew has a different colour shirt on. Up here we're moving away from the greys to the stripes. Stick with the stripes.