Is Isabel same as lavender buff columbian?

Hi all. I came across some Brahma hatching eggs for sale listed as "Lavender Buff Columbian" and I have raised 6 birds from them - they are approx 3 months old now. I absolutely love the colors - similar to Isabel but the gold comes through much stronger on the rooster. I am wondering if this is

Isabel silkie colorand the other colors that happens with buff lavenders

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