问题
I'm try to style the border of the overflow menu. Right now it looks like this.
I want to give it a small black border instead of the blue it is now. I've tried the Menu in the Designer but no luck there.
回答1:
Open the TitleCommand UIID. Go to the Border style and click "Override". Click the ... button. Pick line border and uncheck the "Theme Colors". Select the color you want for the border and its thickness.
来源：https://stackoverflow.com/questions/53049869/codename-one-style-border-of-overflow-menu