message: Update app-custom-theme.md
  Updating syntax in doc for clean up of Theme object
diff: @@ -136,15 +136,15 @@ const myTheme = createTheme({
  fontFamily: 'Comic Sans MS',
  /* below drives the header colors */
  pageTheme: {
  - home: genPageTheme(['#8c4351', '#343b58'], shapes.wave),
  - documentation: genPageTheme(['#8c4351', '#343b58'], shapes.wave2),
  - tool: genPageTheme(['#8c4351', '#343b58'], shapes.round),
  - service: genPageTheme(['#8c4351', '#343b58'], shapes.wave),
  - website: genPageTheme(['#8c4351', '#343b58'], shapes.wave),
  - library: genPageTheme(['#8c4351', '#343b58'], shapes.wave),
  - other: genPageTheme(['#8c4351', '#343b58'], shapes.wave),
  - app: genPageTheme(['#8c4351', '#343b58'], shapes.wave),
  - apis: genPageTheme(['#8c4351', '#343b58'], shapes.wave),
  + home: genPageTheme({ colors: ['#8c4351', '#343b58'], shape: shapes.wave}),
  + documentation: genPageTheme({ colors: ['#8c4351', '#343b58'], shape: shapes.wave2}),
  + tool: genPageTheme({ colors: ['#8c4351', '#343b58'], shape: shapes.round}),
  + service: genPageTheme({ colors: ['#8c4351', '#343b58'], shape: shapes.wave}),
  + website: genPageTheme({ colors: ['#8c4351', '#343b58'], shape: shapes.wave}),
  + library: genPageTheme({ colors: ['#8c4351', '#343b58'], shape: shapes.wave}),
  + other: genPageTheme({ colors: ['#8c4351', '#343b58'], shape: shapes.wave}),
  + app: genPageTheme({ colors: ['#8c4351', '#343b58'], shape: shapes.wave}),
  + apis: genPageTheme({ colors: ['#8c4351', '#343b58'], shape: shapes.wave}),
  },
  });
  ```
  