I like the copper choice.
Have you seen these blacks?
the natural black slate would be nice, and the upkeep really isn't that bad. I have slate in my kitchen, I've sealed it maybe 4 times in 13 years, I use a stone cleaner to mop it. holds up great. (Maybe your previous one wasn't sealed properly?)
the black slate also comes in light charcoal tones.
honed basalt
and take a look here at their beautiful porcelain tile selections
https://tilebar.com/collection/porcelain-tile.html?p=2
https://tilebar.com/montana-chestnut-8x45-porcelain-tile.html
this one is kind of similar to your copper ones,,,and they have other shades and finishes of this lineLinden linelinden-rust-18x36-matte-porcelain-tile.html
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Chesterfield with chairs
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