* We don't output spaces anywhere in the code, unlike the doc suggested.
* CSS explicitly forbids whitespace between function names and lparens:
https://stackoverflow.com/questions/
13877198
* @rgba: a #GdkRGBA
*
* Returns a textual specification of @rgba in the form
- * `rgb (r, g, b)` or
- * `rgba (r, g, b, a)`,
+ * `rgb(r,g,b)` or
+ * `rgba(r g,b,a)`,
* where “r”, “g”, “b” and “a” represent the red, green,
* blue and alpha values respectively. r, g, and b are
* represented as integers in the range 0 to 255, and a