Is there olive oak like there is olive ash ?

[petrochemicals]

Having found some oak with very very dark heart woodm I wondered if there is olive oak like there is olive ash. Its darker than teak, darker than oak furniture, sort of used teabag brown. Is this common

 

[Mesquite]

Aye, I've seen oak with heartwood as dark as coffee sans milk. Not that often but I've seen it.

Have you got any pictures of it?

 

[petrochemicals]

No, but I'll get one and post it.