System: iOS 14
Software: Straight Flush APP
1. Open the flush APP on your mobile phone, enter your personal account number and password in the login interface, and click the login button to log in.
2. After the page jumps, log in to the APP background and you can see that the current background color is red. Click on the personal avatar in the upper left corner to enter.
3. Find the night mode function in the interface that appears, and click the night mode.
4. At this time, return to the main interface of APP, click any stock index to enter, and you can see that the original red background has been set to black.