1. CSS background-blend-mode

    Allows blending between CSS background images, gradients, and colors.

  2. CSS print-color-adjust

    The `print-color-adjust` (or `-webkit-print-color-adjust` as prefixed in WebKit/Blink browsers) property is a CSS extension that can be used to force printing of background colors and images.

  3. CSS currentColor value

    A CSS value that will apply the existing `color` value to other properties like `background-color`, etc.

  4. css property: background-color

  5. manifest: background_color