[data-_extension-text-contrast='fg'],
[data-_extension-text-contrast='default'] {
  color: rgb(0, 0, 0);
}

[data-_extension-text-contrast='bg'] {
  background-color: rgb(255, 255, 255);
}

[data-_extension-text-contrast='both'],
[data-_extension-text-contrast='std'] {
  color: rgb(0, 0, 0);
  background-color: rgb(255, 255, 255);
}

[data-_extension-text-contrast='fg'],
[data-_extension-text-contrast='default'] {
  color: rgb(0, 0, 0) !important;
}

[data-_extension-text-contrast='bg'] {
  background-color: rgb(255, 255, 255) !important;
}

[data-_extension-text-contrast='both']{
  color: rgb(0, 0, 0) !important;
  background-color: rgb(255, 255, 255) !important;
}

[data-_extension-text-contrast='std'] {
  color: rgb(0, 0, 0);
  background-color: rgb(255, 255, 255);
}

Add !important to styles to override authors who think their broken css is also !important.
Add !important to styles to override authors who think their broken css is
also !important.

- The 'std' style is for reverting to a browser default, so no need to
  force it.
