Wow! you are great bro Meng Yi

... Last days, I was also faced with that problem but now I do it as your answer by disabling automatically pick an accent color from my background option from personalization setting. viola everything fine. but I don't satisfy with this solution bcos I like the automatically changing accent color of windows border. How do you think? if you get another solution without disable dynamic accent color, let me know :) by the way thank you so much for your solution.. cheers
