code: def get_rgba(self):
          
          rgba = ffi.new('double[4]')
          _check_status(cairo.cairo_pattern_get_rgba(
              self._pointer, rgba + 0, rgba + 1, rgba + 2, rgba + 3))
          return tuple(rgba)
docs: Returns the solid pattern’s color.
  
          :returns: a ``(red, green, blue, alpha)`` tuple of floats.