My subject header pretty much says it all. I'd like to use images inside a coloring book, and might also like to use images inside children's books - both intended for resale. Will the standard license allow this? I understand that you're not supposed to sell a single image as a poster, t-shirt, or mug, but I'm looking at incorporating multiple images in a project which would have additional elements.
No, the standard license does not allow for this use. You will need an Extended license for each image you intend to use in the coloring book as the images make up the primary value of coloring books.