I'd just head for B&Q mate. Get some very low grit sand paper say 40 or 80. And look in the wood stain/varnish section. They have all sorts of shades of wood grain. I think you want walnut.
Funny thing is, walnut must be the most popular. Cos twice I went to the local B&Q superstore (i.e the biggest one) and the walnut was all sold out. Plenty of all the others though.