Sadly, no. You need a Blue/Blue or a Blue/Splash to get Splash. There's a great set of Punnett Squares for BBS on the forum:
https://www.backyardchickens.com/a/punnett-squares
It is funny that you should mention Punnett squares. I am teaching a high school biology course for our homeschool co-op. We have been learning about genetics and I gave the kids the assignment to find out who came up with Punnett squares. Reginald C Punnett was a British geneticist who not only created the Punnett square but also bred the first auto sexing chicken the Cambar by crossing Barred Rocks and Golden Campines. He was also one of the three men who created Cream Legbars. My students laugh because whatever we learn in class always eventually involves chickens!