I personally don't think blue/gray/green/hazel colored eyes are automatically more attractive than brown. It depends. Someone with brown eyes can have a really beautiful eye shape or lush eyelashes and that can be more stunning than someone else's blue eyes. But these lighter eye colors on a darker skintone may possibly be automatically more attractive in a lot of cases due to the rare contrast.
I like my eyes. They're almond colored, almond shaped, and I have naturally long and curled up eyelashes.
A lot of these things are subconscious for me - Really depends on the girl - I am not sure why I might be more attracted to any girl over another but not with any huge conviction I would probably say I like green/brown/hazel more.