I am wondering too if this isn't mislabeled. FSS is often more of a creamy peach pink and has a wider eye pattern than yours shows with more yellow in the throat than the green yours shows. The green on FSS is deeper in the throat. This can be verified with each image in the database. Also, yours shows a strong whitish midrib and if you open each of the images in the database, you won't find that feature on any of them, just perhaps a paler midrib like the base color. And even if it's not fully double, there is always some hint of doubling in each image.
