How to customise the arrows

If you wish to change the appearance of the connecting arrows, it is very easy to do so.

1
In Preview mode, head over to Design. There, you’ll be able to change the colour of the arrows.

2
Also customisable is the colour of the highlight effect being displayed on hover.

3
Regarding the width of the arrows, you can customise that by heading over to Data & arrows and increasing or decreasing the Arrow scale value.