Hi Westfork, welcome to (NGA), glad you found your way here.
Two-tone colored blocks are sure interesting, I've never seen that kind before.
To answer your question about the freezing problem, I have never lived in an area that the ground would freeze that deep. However, my raised beds have been down to 10° above zero a number of times. The soil did freeze from top to bottom, but never filled with water once the rain came. I just made sure that the soil I put into the blocks was fast draining and then I used a very thick layer of chicken grit or clean quarter minus that was sharp.
