How to replace nova5pro with white characters on black background and black characters on white background?

1, the phone is turned on in deep style, and the background color of deep style is black, resulting in the short message font being displayed in white. 1 On the main screen of the mobile phone, after opening the toolbar, select Close Depth Switch, as shown in the figure below. After turning off the depth switch, open the SMS page, and you can see that the SMS information is restored to black font. As shown in the figure below. In Huawei's mobile phone, the font of short messages turns white, which should be the deep type of mobile phone. After the phone is turned off, the SMS font is displayed normally (black).