Not sure if they're True Blues, as I've never seen them personally, but I'm curious to see over time! I want to add more chickens to our flock within the next year or two and was looking into getting a few True Blues and True Greens, so I'm glad to see someone else asking about them because they seem to be a really new or uncommon breed from what I can tell!
I was looking for some Brown Leghorns and bought some chicks that I was told were Brown Leghorns. Around 6 moths later I was getting brown eggs from them. They turned out to be Partridge Rocks. As chicks they look very similar. I found a breeder and finally got my Brown Leghorns. Buyer beware... Good luck and have fun...

