Black Hair Blah

Hi! I colored my hair about a year ago using Nice & Easy (?) Blue Black. Now I have continued growing my hair and about a third of it it's my natural dark brown and the rest is that icky black. It doesn't look bad since it is close to my original color and has faded quite a bit. I would like to go lighter...maybe a medium golden brown which I have used in my hair before and liked it. I have tried "Natural Instincts" but it only colors the new growth. Can I strip the black out myself and if so how? Is there any haircolor out there that can at least add some nice tones to the black section of my hair? Or should I just leave it as is and wait an eternity until it all grows out. I would really hate to cut my hair which is now down to my waist.Any thoughts?? Opinions??