I’m having trouble with setting default color to warm white with my lamp. when I use app to switch on and off no problem it remembers last color and lights it. But when I use regular electrical switch buttons it automatically sets flash white color that I hate. I use warm white in my home. I am really shocked that makers of the yeelight did not think about that. Not everyone is willing to use app for switch it on and off!
You can set default color in device setting page.The option name is set default light.