A string that could be:
blue, red, magenta),#ee82ee, #20B2AA, #f09 ), orrgb() or the rgba() functions.For more details, see: https://developer.mozilla.org/en-US/docs/Web/CSS/color_value.
Note, it is highly recommended to use one of the predefined colors of Theia, so the desired color will
						look nice with both the light and the dark theme too.
For the sake of simplicity, we have merged the font-style, font-weight, and the text-decoration together.
Namespace for the decoration data and the styling refinements for the decorated widgets.