https://developers.weixin.qq.com/miniprogram/dev/framework/ability/darkmode.html

app.json

 "darkmode": true,
  "themeLocation":"./theme.json",
  "window": {
    "navigationBarTitleText": "x'x'x",
    "enablePullDownRefresh": true,
    "navigationBarBackgroundColor": "@navBgColor",
    "navigationBarTextStyle": "@navTxtStyle",
    "backgroundColor": "@bgColor",
    "backgroundTextStyle": "@bgTxtStyle",
    "backgroundColorTop": "@bgColorTop",
    "backgroundColorBottom": "@bgColorBottom"
  }

theme.json

{
  "light": {
      "navBgColor": "#f6f6f6",
      "navTxtStyle": "black",
      "bgColor": "#ffffff",
      "bgTxtStyle": "light",
      "bgColorTop": "#eeeeee",
      "bgColorBottom": "#efefef",
      "tabFontColor": "#000000",
      "tabSelectedColor": "#3cc51f",
      "tabBgColor": "#ffffff",
      "tabBorderStyle": "black"
  },
  "dark": {
      "navBgColor": "#191919",
      "navTxtStyle": "white",
      "bgColor": "#1f1f1f",
      "bgTxtStyle": "dark",
      "bgColorTop": "#191919",
      "bgColorBottom": "#1f1f1f",
      "tabFontColor": "#ffffff",
      "tabSelectedColor": "#51a937",
      "tabBgColor": "#191919",
      "tabBorderStyle": "white"
  }
}

结果编译不通过

错误如下：

VM36:1 appJSON["window"]["navigationBarTextStyle"] 字段需为 black 或 white