No, this spell won't work. You can't change your DNA with magic, so you can't change your eye color. There are a lot of spells here that won't actually work (most of them are in the fantasy section). This is because anyone can post spells, and these spells generally aren't removed.
You should go check out the General Info section of the forums. The pinned threads (the ones with red tumb tacks next to them) are really helpful if you're jsut starting out.