Increase seperation between views

is there a way to increase the separation between views, for instance by a much bolder line?

I keep slipping from one to another.
Thank you - Jan

Hi Jan - you can change the color in Options > Appearance > Colors > Window color 1 to something that contrasts more with the viewport background colors.


Hi Pascal,

thank you a lot – what I forgot to mention is that I am working in the Mac version. I think it is preferences then and colors – but there is no color 1. If I change view port background to black, that doesn’t help either. Got an idea?

Best regards - Jan