In Azul game option, I can change the red tile's design. But I couldn't find the option that changes the blue tile's design too.
Could you add that option?
I think the red tile design option was added to have an element other than colour to distinguish the tiles, because red and blue tiles don't have a motif in the physical game. So I doubt there will be other design available because I never seen an alternative design of the physical game, and the objective of the option on the BGA adaptation is visibility and not aesthetic.