There are spells like that but I do belive they require power because its changing a pig part of you because your eye colour essentially comes with in your DNA so chaning that can be quite dangers so I would just suggest cotacts
That sounds like a glamour spell to me. They've worked for me, but I've never tried an eye color one and the effects are temporary. Click the spells tab and search it.
If you decide to go with contacts, see an optometrist! You need to make sure you have the right size, wearing the wrong size on a daily basis can damage your eyes.