[Chaser]

Depends on the look you want.I've used a Ebony stain on a grey/black lammy to really darken it up.Also used the Ebony on royal purple to tone down the purple.Then tru oiled it.Slow

You did WHAT to Purple I used to like you

Walnut stain is to add some dark tint to a light color stock and usually only in the tan/brown base tones is it used.
If you simply want a nice finish and do not want to change the actual color of your Lami then just start the Tru-Oil..lots of light coats.