Removing lighter mark from pine chest of drawers

[Merrow]

I have one of those pine chest of drawers that I suspect that everyone had at one point in their life! I was hoping to sand it down, wax it and replace the drawer knobs just for a bit of a change. I've been experimenting with one drawer before tackling the whole thing, but can't seem to get rid of the lighter patch where the knob was. Is it just a matter of sanding more? Worried I'll not have any drawer left by the end!

Pic to try and illustrate what I mean - the knob is the colour the whole front used to be.

[wowfudge]

You'd have to sand the rest of the drawer front down to the wood not affected by either the finish or exposure to light (or both). I would either use wood dye such as Colron to touch in the lighter area so it's less noticeable or just make sure that the new knobs cover it.

[Merrow]

After an afternoon of sanding I'm going for knobs that cover it!