I'm in the process of gluing up panels for a blanket chest for my daughter. I'm realizing that the back (inside) side of the panels will show when the chest is open and there is some sapwood there. Is there a relatively simple way to blend the sapwood into the darker natural Walnut color. I plan to BLO then pad on several coiats of shellac on the "good" walnut. (Possibly P&L #38 on the top). Any suggestions?? thanks. I guess I want the inside to look presentable even tho my daughter will probably end up using it as a toy box temporarily for our new grandaughter.