Custom bg color no taking effect?

[isaac-ramirez]

Hello!, I was wondering why are my custom background color not working?, this is my code

rippleui: {
    themes: [
      {
        themeName: 'dark',
        colorScheme: 'dark',
        colors: {
          primary: MyTheme.colors.green.DEFAULT,
          secondary: MyTheme.colors.orange.DEFAULT,
          backgroundPrimary: '#964643',
          backgroundSecondary: '#964643',
          border: '#964643',
          content1: '#964643',
          content2: '#964643',
          content3: '#964643',
        },
      },
      {
        themeName: 'light',
        colorScheme: 'light',
        colors: {
          primary: MyTheme.colors.green.DEFAULT,
          secondary: MyTheme.colors.orange.DEFAULT,
          backgroundPrimary: '#964643',
          backgroundSecondary: '#964643',
          border: '#964643',
          content1: '#964643',
          content2: '#964643',
          content3: '#964643',
        },
      },
    ],
  },

primary, secondary, content 1, 2 and 3 are taking effect but backgroundPrimary and backgroundSecondary are not, I'm doing something wrong?