Yes, guys like pretty eyes, and the lighter shades that vary to other shades based on lighting or what you're surrounded by (change colors) are even more interesting. The good news is just about all eyes are pretty.
Probably the most common/least "beautiful" eye color out there is boring brown. Yet, Hallie Berry has basic brown eyes and nobody complains about them.
So don't worry about it; your eyes are beautiful as is (I'm assuming you don't have a disease or cataracts now), especially if you are looking right at the guy who likes you, and notices, and then you smile and all that. See? It's not about the color its about the eye contact and connection.