Schluter Jolly in anthracite or black, to blend in with the tile better. Brass would stand out way too much. Edges are not features to accent.

You can paint Schluter. We just had some installed last week with large format tile that doesn’t have matching trim pieces. We bought metal Schluter (not PVC) in the closest color we could find, sanded lightly, and sprayed a few coats with matching paint. If we hadn’t been able to find matching spray paint, we would have taken a sample of the tile and had it color matched for paint. Ours is now practically invisible because it blends with the tile so well.

ETA We were careful to use paint that works on metal.

ETA2 (sorry I’m on my phone and can’t seem to figure out how to edit previous comments.) instead of painting the Schluter to match your tile, you might be happier painting it to match your grout or wall color since it will be next to those. Schluter is inexpensive enough that you can buy an extra piece or two and test different colors.

I would do the skinniest quarter round Fireclay can make. If you use Schluter, don't use a contrasting tone (black? seems wrong). Match the wall color or grout instead.

I'd be tempted to use oak. :)

I think I'd go with stainless Schluter. It would kind of just disappear. Oak trim to match your cabs is also a great idea!!

I agree with Fori. I would do the thinnest edge piece that Fireclay makes.

I would not worry about the Kelp color being slightly off due to the field tile being made at a different date. I am sure it will be close enough in color to not stand out as a mistake. Being handmade, I think the glazing has slight variations of color, pooling darker towards the edges. No two are exactly the same. Is this close to what your tile looks like?

So I am thinking that a small quarter round or what ever edge style you choose being slightly lighter or slightly darker then the field, would still look good. Certainly way better then the schluter imho. Maybe order a few trim pieces and see how they look?

What color grout are you doing? A green to match the tile or a lighter grout that contrasts? In your kitchen, I would prefer to have the grout match the tile.

I would definitely not do the gold schluter. To me, even as thin as it the jolly is, I think it would stand out too much and would cheapen the look of the gorgeous tile. Jmho..

I am also not sure on the idea of painting it a green color to match the tile and grout, but it is worth a shot to try it and see how that looks. I just don’t think it will look as good as the tile trim..

BTW, let me just say, I love your kitchen! The wood cabinets are so beautiful, and look great with the marble counters and the brass faucets and hardware! The Kelp backsplash is going to look awesome!

I would do white schluter to disappear into your walls and trim. Not a detail to highlight

@rebunky I think I'm gonna do the trim. I was mostly concerned about the cost, but... I want it. I hadn't really thought about grout color too far, most of the kelp installations I saw on Fireclay's website had white/off-white grout. I'm not sure what's available in terms of greens, maybe something mint-y?

And thanks for the compliment! I used this forum so much for decisions on it and I hope to post when it is completed (if ever) - right now it's messy from handling a bunch of our garden produce.