Even though these are hazel lenses, they still bring such a brightness to the eyes and you can see a distinct difference without it being "over the top"!
I love seeing "before-and-after" images or comparison ones because it really shows any little (or big) change~
Color - On the scale of brightness, I'd put Hazels lenses above Olive by just a tad. They show up a little lighter then hazel but still look very natural. They blend into the natural eye really well while still giving you a "light colored eye" look.