Where are you using ‘stone’? I would only use it where real stone is used- looks like in your case the foundation and porch/ steps. The rest should be siding. I don’t hate the current selection but I do hate it randomly on the front above the porch floor.

I do not like what you have on there at all. No to gray. I do not like it with the color of your siding.

Selecting a stone that is native to the area in which the house will be built is always a good idea.

Select the stone and then select the color of the siding.

Off Topic:

Wonder what the porch soffit lights will illuminate?

If that is a driveway immediately beside the house I wonder if the fireplace projection will ever conflict with traffic?

A stone that''s NOT gray/blue but buff/tan would be a better selection.

these selections are what I have in mind, any idea what kind of stone that is? name and color?

Not seeing the choices but no way does that go on the top floor no matter what Foundation and steps and all around the house foundation and not on the front wall above the steps.

Where do you plan to purchase the stone. Pick from that supplier.

Eldorado?

Plygem? https://www.plygem.com/stone/veneer/  This site has a 'visualizer' for you to see your stone selection on your home in advance.

Whichever manufacturer is available to you, stick with beiges, tans and ivories. No gray.