Dark x Light Brahma cross? Please help!

Hello folks. I was given these two birds and they are driving me crazy. I tried my best to convince myself they are gonna turn into 2 dark brahmas with age but as of now I seriously think they might be a cross between dark and light. Since I sell some chicks and hatching eggs I'd like to know

BRAHMA Tail Feathers Brisbane TailFeathersBrisbanetail feathers

Brahmas

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Brahmas

Light Brahma and French Black Copper Marans Rooster