Add option to make blocks transparent

[LuckyMika]

Is your feature request related to a problem? Please describe. It's really hard for my eyes to look at all the blocks rendered.

Describe the solution you'd like Add an option to make blocks transparent.

Describe alternatives you've considered Another option would be to fade opacity of the block outlines with distance.

Additional context https://www.nhs.uk/conditions/eye-cancer/

[MichaelHillcox]

Turn down the distance. You don't need a high distance.