I need opinions! What color should I dye my hair?

I'm in highschool & I really need opinions on what color to dye or highlight my hair. I'm naturally blonde but I'm kind of getting sick of it so I'm thinking about going darker, like brown, but maybe that's too plain and I might want to go back to blonde, but I don't want to dye my hair too much, causing it to ruin. I have highlights now; I've got kind of a dark reddish brownish color underneath and that same color with highlights and blonde highlights but it's begining to grow out & I'm thinking about trying something new beacuse I have alot of blonde highlights aso I look reallly blonde. I had that with purple highlights but those were only temporary. I kind of want something like that too... maybe. Like the colors like blue, or purple, or red. But I don't know. I've got green eyes & an ivory skin tone.Please give me some help! pictures or links would help lots! thanks!