What would you do?

I like to color my hair crazy colors. My boyfriend hates it. My hair was blue when we got together. And yesterday I colored it blue underneath. He hates it. Im not completely in love yet, because of my roots, color just doesn't take well at least not blue... I was thinking about just changing the color or something. I have struggled with depression and self hatred. So I try to make myself feel better about myself, every time I have looked in the mirror today or caught my reflection in something I smiled. I did my nails and eyebrows today. Just continuing trying to make myself feel better. What would you do? Change it back or do what is making me happy.

He told me his reasoning why he doesn't like it. It is our age difference and that he is old school. He's 38 im 26.