I read that as the hens get older, their egg colors can lighten up some. I’ve noticed this happening with my brown egg layers... not sure whether it applies to other colors, but since green eggs are blue shelled plus a bit of brown color over the blue, I would think the same would apply.
As to the wonky shape, I’ve had some of those but haven’t worried about it since I have lots of new layers. I’m not sure whether just two weird eggs is anything to be very concerned over, though.