Hi, well I have dark hair and get great results with henna, my baby's got light brown hair and I put a mixture of chamomile and marigold tea with lemon juice (sometimes) and sometimes a little hydrogen peroxide on it, gives him really beautiful blond highlights especially in the summer if that's what you'd like. Don't know what kind of hair colour you are looking for, my friend's got hair like yours and she got a perm, it looked fantastic! Anyways you can try "neutral" henna (colourless henna) for your type of hair and it will make it softer and shinier and fuller without giving it any colour.