Certain shades of green are very beautiful,for me it's emerald.But the thing is,various shades can look good on various materials,like olive green can look amazing on certain clothes, darker greens have a more luxurious look to them. And I can understand the way olive/brown could get mixed up.It's how my mum would say 'wear that brown-ish one' and I'd be like 'I don't have one' and then if she shows it to me,lol,I'd like 'it's green!' This also happens a lot with green/blue transitions for us.XD