There's a 19-comment thread on this topic here on GW that began on Feb 13 and was last updated July 12, it's called Choosing color - Hardie Siding

Wouldn’t the warranty kick in then? No product is perfect. But most have a way out. Read the warranty carefully because most of them state that if their is a problem and it's not caused by 10,000 different things, they'll replace the product. However they won't pay to remove the bad product or pay to put up new product. Basically most warranties are almost useless. Primed hardie with the intention of painting defeats the purpose of hardie. It’s a fabulous product and I don’t regret it at all Yes it's also fine as long as you are happy with their limited choice of colors.

Stone was a foundation material, before we had concrete. When using stone as a decorative element, it is best to use it near the foundation, so it looks authentic and useful - and put it all around the house. Back when stone was used as a building material, it would never be put on one wall, as you've shown. The only time stone would climb up off the foundation is when it was used as fireplace/chimney. That's why folks are objecting to a small wall of stone - and "peel and stick" refers to the fact that it is clearly for show, not structural. 4 exterior materials is 2 too many. The facade looks busy and disjointed - rather than a uniform siding type to bring the elements together, the various materials make the house look like different structures, plopped next to each other.

I ended up choosing Pearl Grey. I saw a few houses and pictures of cobblestone that seemed to have a pink or yellow undertone which wasn't the look I'm going for. It's not installed yet so I can't share a picture, unfortunately.