You Need Me To See Me, I Can Be Quite Pretty; I Come In Different Shades, But No Shapes Or Sizes; What Am I?

Riddle: You need me to see me, I can be quite pretty; I come in different shades, But no shapes or sizes; What am I?

Answer: An eye.

Source: https://www.riddles.com/index.php/2021

Riddle: You need me to see me,
I can be quite pretty;
I come in different shades,
But no shapes or sizes;
What am I? Answer: An eye. — by Morgan Foster v1.

Riddle: You need me to see me,
I can be quite pretty;
I come in different shades,
But no shapes or sizes;
What am I? Answer: An eye. — by Morgan Foster v2.