Don’t know which colour you should use for your eyes? Using contrasting colors, the color of the eyes become more intense. Here is some guidelines:

If you have a bright green and blue-green eye colour you can highlight with colours with a red tone. Colours like that might be purple, coppertones, apricot and warm browntones. If the colours are golden, that is nice too.
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If you have blue eyes, like me, you can use colours with an orange tone. Orange is a complementary to blue, so this will highlight your eyes. Make-up in colours like orange, brown, champagne, bronze and gold is something you need to have.
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Brown eyes? Lucky you, you can use almost anything. Brown has a little of every complimentary colours there is, and therefore a lot of colours makes brown eyes shine. The best ones are; different purple tones, green, turquoise, dark-blue, gold and other metallic colours.
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If you have multicoloured eyes, you should focus on the colour that is most dominant and go from there.
I use my eye-colour also when I’m looking for clothes. I feel that my eyes are the most important thing on my body, and I always want them to look good. My eyes are the two things on my body I love the most.