What's the best color to hide my gray hair. I had light brown hair but now it's mostly gray.?

I have blue eyes and pale skin. Whenever I dye my hair light brown the gray soon keeps coming back. If I dyed it light blond would it be better.What's the best color to hide my gray hair. I had light brown hair but now it's mostly gray.?
blond,the lighter the better cos it covers the white hair and also fits with your skin tones and your eyesWhat's the best color to hide my gray hair. I had light brown hair but now it's mostly gray.?
light blonde or maybe black
light blond or black