Yuu can certainly grow sweet woodruff between stones but whether it will provide the effect you want is another matter. It is a much looser and rangier GC and does not hold up to foot traffic very well - leaves and stems will squash and be damaged very easily by feet. It also gets taller than you might like - usually creating a carpet of 4-6" (or as much as 8") rather than the very low creeping mat-like habit of the others I suggested. It can also be prone to a fungal dieback and can be a very aggressive spreader. Don't get me wrong - I like Gallium (sweet woodruff) but it is a consideration of right plant, right place and I don't think this is the one. I think a better use for it is under a shady shrub planting where its height, delicacy and ability to spread rapidly will be more appreciated.

If you explore products of other manufacturers, I think you will not have much difficulty finding pavers that are somewhat more subtle in coloration than what your second picture shows. Either way, I think either of the samples you show would make decent patios and that it's true, once the job is finished and plants are in, the pavers will seem more natural, less obtrusive. If the rugged texture is bothersome, I'd go with the smooth brick shape. Keep in mind that concrete pavers fade over a period of time as their surface wears away from weathering. They will become gradually "greyer" as their inner components are exposed.

http://www.monrovia.com/plant-catalog/plants/1336/mini-penny-royal-majestics-hydrangea/ Based on the description here it sounds like it might be remondant. I would trim the spent blooms. If it reblooms they aren't usually as large as the first set. At least mine on my Endless Summer never were. Maybe Zi just needed to fertilize them better. If you can plant it outside they like an eastern exposure/morning sun, lots of water, organic matter, mulch and excellent drainage. It should also do well in a pot of you can mimic those conditions. Make sure you take it out of that foil if it was on it.

"... nothing more maddening than pavers with bad tolerances..." Though frustrating, as it was my first DIY experience with pavers, it ended up being OK once I was able to get beyond the mixed colors, which all came at the beginning of the install. The drive was probably 80% one color and 20% mixed. If by "... ripped all the pavers down..." you mean CUT ... on the saw ...?? As it was, I had two solid days of non-stop cutting. It was winter. My hands were numb from wet and cold. I either got tired of changing gloves or ran out of them, don't remember, but had on crappy, sopping wet cotton gloves with all the fingers worn through. I didn't discover until the end of the second day that I had flat worn off the pad of every finger down to the meat! OMG, it hurt soooo bad when they all dried out! I couldn't touch anything for a few days. That was enough cutting for my first paver project!