xmc/modular/titlebar_icon/mirc_6.css

:root {
  --titlebar-icon: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAB/SURBVDhPxZALCgAhCEQ9ujcvJ1PMggwWduBRijN9CGLm9sIwRWmzzhbyeUCtDooD2ENWAyjPTKvq3wAmahVk1NkCpHJy7b2mMHuQ6iUAZkOs4PyEaPReuAHWJcAMZlr2wZhOB/UAsBhNt4Ackm5xD5iDW8jsnz8xMoZ0zYiIOusbnt1lWQzCAAAAAElFTkSuQmCCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==");
}