If I add royal blue to a light chocolate butter cream frosting will it come out dark blue faster?

I don't want my frosting to taste yucky and all I have is wilton color. I know americolor is supposed to be better, but I don't have any.

I am hoping starting off with a chocolate frosting will help.

Anyone try this before?

I don't think this will work. Yes, you'll get a darker color, but that color won't really be a blue.