How to change the size color of Anchor point( Pan behind tool)

Hello,

I am following one tutorial. there the tutor has a nice blue color visible anchor point. Mine is purplish grey. It's very uncomfortable to work with when the background is similar color. Anyway I can make it black and bigger?

In most 3d software you have the option to make a gizmo bigger. I dnt find anything about that on the web. I need it badly.

Thank you.