Why are the primary background colors of 2D and 3D design software black and grey without saturation?

I was wondering if there is any science-based research consensus which recommends using nonsaturated colors (pure shades of greys and blacks) in complex graphic design software for better usability? For example Photoshop, 3dsmax, Framer. I understand that darker interfaces are better and well researched and that saturation "removes" black from the color, but what if you still have a great contrast but with some tint?

Example without saturation: enter image description here Example with saturation: enter image description here

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