This is an African teak kitchen, or African Iroko wood. We've applied a molded piece to the inside edge of the solid wood frame and panel door. This is just a clear natural finish with no stains used. As a photographer, it's hard to get out of the photo with such a mirrored backsplash.
Here's a French provincial style. These doors are raised panel solid black walnut cabinet doors.
Again, this is just a clear natural finish, which I feel maintains the integrity of the wood. Wood is a real natural material and we need to see it's disposition. Stains often just muddy the waters, homogenizing the character.