I figured out through CSS inspection how to change the date balloon styling but I cannot find the CSS codes for the main vertical line and the small horizontal lines between that line and titles. Could you advise, please?
Ok, thanks. So, the lines you ask for are images so to change their color, you need to replace existing images with own. Below, you have full path of both images:
Comments
/betheme/images/timeline_right.png
/betheme/images/timeline_left.png