if you don't like it, follow ni dou's way.
otherwise, if the wood panel was dark because of aging, a time consuming way of fixing it, is to sand the panels, seal & stain again with a lighter color.
if you use the lighter color without sanding first, you won't get the desirable color
otherwise, if the wood panel was dark because of aging, a time consuming way of fixing it, is to sand the panels, seal & stain again with a lighter color.
if you use the lighter color without sanding first, you won't get the desirable color