First Public Working Draft: CSS Color Module Level 4

The Cascading Style Sheets (CSS) Working Group has published a Working Draft of CSS Color Module Level 4. This specification describes CSS color values and properties for foreground color and group opacity. It also describes in detail the CSS color value type and describes CSS properties which allow authors to specify the foreground color and opacity of the text content of an element. It not only defines the color-related properties and values that already exist in CSS1 and CSS2, but also defines new properties and values.