public define String format_rgba_to_style_color ( RGBA color ) = if color is { rgba(r, g, b, a) then with alpha_str = if to_Float(word32(word16(a, 0), word16(0, 0))) / 255.0 is { failure then "1", success(v) then float_to_string(v, 8) }, "rgba(" + to_decimal(r) + "," + to_decimal(g) + "," + to_decimal(b) + "," + alpha_str + ");" }.