I've stopped by the wood store several times over the last few months looking to see if they have any cherry in stock. Asked the guy there and he said they never get any request for it, so wouldn't order it. I did find they had some Alder that was close in color to cherry. I don't think it darkens as much a Cherry does over time. I've done a few test pieces, with and without stain and narrowed down to two processes that give me very close matches.
My vanity is unstained cherry that was sealed and coated with poly, no stain. The one on the left was shellac'd, sanded lightly, then stained, the one on the right was simply stained. The one on the left currently matches the unstained cherry the best (when in sunlight and under incandescents). But the one on the right is only slightly darker and may match better over time.
Would my thinking to go darker now be a better choice?
The vanity does sit under a skylight, so will get lots of sun over the next few years.