I have to separately write a full post about this regarding what colours to use and what not to use because it just ticks me off and it's far to late for me to get into that right now. I promise a post about it though. But just in a nutshell, yes there are certain colours that brings out a certain eye-colour better than others do or just complements and harmonizes with the eyecolour better HOOOOWEVER I completely utterly strongly massively entirely disagree that a certain coloured eyeshadow simply can not be used for a certain coloured eye. Period.
As said, more on this later as I really got myself going here now. Sigh... how shall I sleep now?