More visible arrows on the board#564

I would need a way to make the arrows more visible between the cards. When I zoom out and want to have an overview of my thought process, I can’t distinguish the arrows, or hardly, whether the board is white or black. Thanks for considering it!

I would be happy if you could make the arrows more customizable:

1. different colors for arrows (similar to the cards)
2. different styles for arrows (dashed arrows, etc., make the endings of the arrows customizable)

I would also like to be able to change the layout of the arrows so that they are angular, for example.