First, you are the customer, so you have to decide what is/is not acceptable to you.
However, I don't thing the lighter spots should be a concern. G&G (as well as E Green) use crust leather for their uppers; this leather is a light brown until it is finished with creams/polish after the shoes are made. As you can imagine, getting these coloring agents between the welt and the upper is difficult, so some of these areas may be missed. Furthermore, when your foot is in the shoe, the upper will tend to compress a bit around the perimeter, pushing the upper closer to the welt, so these areas will likely not be visible, even from ground level, nevermind eye level.
The one darker spot is probably some of the edge ink; it shouldn't be there, and is a bit more of an issue to my eye, but ultimately it is purely cosmetic and would not be noticed by the overwhelming majority of observers. It might actually come off when you polish the shoes, and, finally, it appears to be on the inside/medial portion of the shoe, which is less visible than the outside half and thus is a pretty minor cosmetic issue.