I did a stock with either birch or beech wood, by first using a cherry stain, that gave a red tint to the hard growth rings( the lines). When it dried, I sanded and steel wooled off the red stain from the soft wood. The I used a good walnut stain on the soft wood. The red in the hard growth rings helped them "pop" out a bit through the walnut stain, but the walnut stain muted the cherry stain, so you cannot see a separate " red " color in the hard growth. I then finish with Tru-oil.
The stock came out very nice, with the hard growth rings showing very nicely through the finish. The original finish had been a walnut brown PAINT! and the gun's owner had no idea what wood the stock was, and had never seen any grain. When I handed him back his gun, he was shocked, and wanted me to reassure him it was the same piece of wood. Then, he was so pleased with how it looked that he decided he was going to leave this rifle to one of his grandsons as a family " heirloom ".