I think you have to pick the color from your stone. There is such variation in stone colors that that should come first.

I'm not so much of a fan of the dark brown in the picture you posted....rather than 'pop' as you say, I think it distracts from what could be a much richer looking color scheme as it is too much contrast. If you darkened the wall color I think it would look better. Or if you lightened the accents so it blends better.

Go to houzz.com and look at stone exteriors for some ideas.

[Traditional Exterior design[(https://www.houzz.com/photos/traditional-exterior-home-ideas-phbr1-bp~t_736~s_2107) by Other Metros Design-build Witt Construction

[Traditional Exterior design[(https://www.houzz.com/photos/traditional-exterior-home-ideas-phbr1-bp~t_736~s_2107) by Cincinnati Architect Richard Taylor Architects

[Traditional Exterior design[(https://www.houzz.com/photos/traditional-exterior-home-ideas-phbr1-bp~t_736~s_2107) by Minneapolis General Contractor Stonewood, LLC

What if you went with Autumn Tan? It's in the beige family. I think the disconnect with the Monterey Taupe is that it reads gray. The stone reads brown and tan to me. Autumn Tan has the same saturation value as Taupe. You'd still have the same contrast with the dark columns.