Hard to be sure with the shadows, but I would agree that it is a very light mint green.
If that cake is light green then the camera did not pick it up because I can not tell what color it is. Hopefully someone else here will be able to tell you.
I almost looks like a really light bluish green. I think my eyes are going bad.
ALike a dusty gray-green. Palest pale sage?
Oh I forgot to also ask if anyone has an idea of what kind of flowers are on the cake.
The flowers could be a huge carnation, I have seen these at ices convention and it could be a peony. There are different types of peonies as well as many flowers. The cake is beautiful!!!
Yeah the flowers also look like a peony to me, or a fantasy flower.