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So many eye candy possibilities!! I love it!Hiya, Alethea, and welcome to BYC!
Your blue split to chocolate Orpington:
Blue split Chocolate x Splash = Mauve pullets, Chocolate Splash pullets, Blue pullets, Splash pullets, Splash cockerels, Blue cockerels, Blue split Chocolate cockerels, and Splash split Chocolate cockerels
Blue split Chocolate x Blue = Mauve pullets, Chocolate pullets, Chocolate Splash pullets, Blue pullets, Splash pullets, Black pullets, Blue cockerels, Splash cockerels, Black cockerels, Blue split Chocolate cockerels, Splash split Chocolate cockerels, and Black split Chocolate cockerels
Blue split Chocolate x Chocolate Splash = Mauve pullets, Chocolate Splash pullets, Blue pullets, Splash pullets, Mauve cockerels, Chocolate Splash cockerels, Blue split Chocolate cockerels, and Splash split Chocolate cockerels
That's from this site. I use this for some of the color genetics for my silkie breeding:
https://www.backyardchickens.com/th...n-color-genetics.1219858/page-2#post-19511066
Also, this is still Greek to me most of the time, but many who do creative breeding use it. https://kippenjungle.nl/chickencalculator.html
Good luck! Make yourself at home here!