About Blue color.

[vio]

Check this.

https://glarminy.com/2017/01/17/blue-light-screen-filter-specs-recommendations/

 

[SantaMonica]

Any relation to tanks? At night I dim the computer screen, and use a very dim orange room light.

 

[vio]

Any relation to tanks? At night I dim the computer screen, and use a very dim orange room light.

I think there is some glasses for that also.