[rhmc24]

For a lot of years I use Fiebing's leather dye for gun stock wood stain . It is available in several shades of tan, brown & black. It can be mixed to get in-between color & can be lightened if need be with alcohol on a rag. Cost maybe the problem for a one-time job.

For checkering I finish with poly eurythane varnish brushed in and brushed off with an acid brush cut down to less than half inch bristles. An old toothbrush would do.