Yeah - something's not working for for me there too - the grey of the base terrazzo is maybe too light and cool (too much contrast with the green/blue chips). Feel like that would work with a more monochrome palette more - not vibing with the pink.
If various greys are of interest check out forbo linoleum, they send out samples fairly quickly. Almost entirely renewable materials, carbon neutral manufacture, no off-gassing etc. Most patterns are marbled but there is some speckle and plain.
Here we go...
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