@staticmethod<EOL><INDENT>def from_rgb(r, g, b, alpha=<NUM_LIT:1.0>, wref=_DEFAULT_WREF):<DEDENT>
return Color((r, g, b), '<STR_LIT>', alpha, wref)<EOL>
Create a new instance based on the specifed RGB values.

        Parameters:
          :r:
            The Red component value [0...1]
          :g:
            The Green component value [0...1]
          :b:
            The Blue component value [0...1]
          :alpha:
            The color transparency [0...1], default is opaque
          :wref:
            The whitepoint reference, default is 2° D65.

        Returns:
          A grapefruit.Color instance.

        >>> Color.from_rgb(1.0, 0.5, 0.0)
        Color(1.0, 0.5, 0.0, 1.0)
        >>> Color.from_rgb(1.0, 0.5, 0.0, 0.5)
        Color(1.0, 0.5, 0.0, 0.5)