I think a very dark brown maybe like Black Bean from SW would be bettr since I see no gray at all in the stone some very dark brown with some black undertones . I actually like what you have .

if you want a gray, I'd look for a bluer Gray... it will counter the orange in the stone.

I think the orange in the stone could also work with a gray/green. You can see it here with the orange brick that's similar in color to your stone.

@BeverlyFLADeziner- i’ll take a look at one of the other whitesrd…thank you! Unfortunately, the stone is CO moss rock and I think it really always has been this color and does gross moss where there is moisture. Alot of the homes in my neighborhood have the same rock and no one knows what colors to put with it. It is getting power washed prior to painting too.

Here are two options to consider with the Bronze and the Bronze and Black