code: @Nullable
    public static CSSRGB getParsedRGBColorValue (@Nullable final String sValue)
    {
      final String sRealValue = StringHelper.trim (sValue);
      if (StringHelper.hasText (sRealValue) && sRealValue.startsWith (CCSSValue.PREFIX_RGB))
      {
        final String [] aValues = RegExHelper.getAllMatchingGroupValues (PATTERN_RGB, sRealValue);
        if (aValues != null)
          return new CSSRGB (aValues[0], aValues[1], aValues[2]);
      }
      return null;
    }
docs: Extract the CSS RGB color value from the passed String. Example value:
  <code>rgb(255,0,0)</code>
  
  @param sValue
  The value to extract the value from. May be <code>null</code>.
  @return <code>null</code> if the passed value is not a valid CSS RGB color
  value.