For example, my younger brother, while he and I are nothing alike, we both share the same thick, dark brown hair and bulky weight scheme.

So Luna and Celestia would at least HAVE something in common, right? Well, while Luna's mane is a bluish/purple, why can't Celestia's be a pool blue? It shows that they are somewhat related right?

I completely and totally understand why some people don't agree.





On other notes; I love Celestia's mane color in this image much better then her lemon pink color!

I believe it is much more likely for Celestia to have a pool blue mane because she is Luna's sister--and gene pools have shown to have some common traits with siblings.