How to fight off my insecurities?

My boyfriend always comments on how gorgeous woman's eyes when we're watching tv shows or movies. Usually it's people with gorgeous blue eyes.
i agree they have stunning eyes but without him knowing i feel self conscious about my eyes Mine are so plain and dark brown. He is innocently saying comments but it makes me feel sad. He never has ever commented on my eyes ever. I don't want to say anything or show that I'm Insecure about my eyes. How do I fight off my insecure feelings?
How to fight off my insecurities?
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