Which color looks good? Which color do you buy?

I like the black it looks chic trendy classy and rich. I got the black ones.

What's the width & hight of this lens

The lens height is 1.46 inches andlens height width is 2.12 inches

How's the quality after several months of use and after sales customer support?

I use this sunglasses everyday for outdoor work and the quality remains quite intact ,So there is no need for after-sales for the time being