If you don't believe me, take a look at this panel from Fantastic Four number 85:
Then, lay your peepers on this:
Now, I know what some will say. "It's drab!" "It's boring!" "Where's the vibrancy? The flash? The pop??" To this I say, "Try to look past it, I beg of you!" The black and white art make Kirby's spectacular line-work stand out to such a degree that (to me) it could be said that it's the color itself which "mutes" the artist's work. Without it, one could claim to see the TRUE depth of what was the awesome team of Kirby and inker, Joe Sinnot. I call this, comics in it's purest form.
This is why I've grown to thoroughly enjoy Marvel's Essential black-and-white reprints. Not right away, mind you, but over time....