I haven't been able to find pre-WWII Spanish doubles with decent case colors.
It appears into the 60s some were bone charcoal

Ugartechea

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AYA No. 3

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A more recent AYA No. 4 with what I believe is chemical colors

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Nice Arrieta 578 with bone charcoal

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A $15,000 Armas Garbi Model 101 at William Larkin Moore with cyanide colors

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