So, I've done some trial and error, and it will save the new styles, but only if I return home and then save. If I quit the game, or, as often happens, the game freezes or stops working, and then get back in, every new style I've saved abroad is deleted. It's still rather frustrating, because I have to travel home before I quit playing, cutting trips short and limiting when I can build or design lots.
one thing i can think of trying is this when you have the pattern the way you like it use the share button to send to your exports folder although your not actually going to share it then save and quit the game , then go to your exports folder open the folder to see if the pattern saved if so double click on the pattern and install it to your game see if it shows up then in your regular game
try 2 or 3 patterns to test it out
