just because they flare, doesn't mean they can see that well. my white HMPK would flare. it'd take a while, and he'd have to get up against the glass and figure out if it was his reflection or not, but he'd flare. but, he was still mostly blind. you can't tell me that this fish here, can see well enough to breed without getting hurt:
yeah, it looks pretty cool, but i bet he can barely see. you do NOT want to pass on a trait that causes metallic growth over the eyes. :/ how does that BETTER bettas?