Medium grey or light grey theme

### Feature Idea

Hello,

There are a lot of nearly identical dark themes and one light theme that's too bright. What would be nicer would be a light grey or medium grey theme — not one that's screamingly bright like the light theme but not one that's so dark like the others.

I'm using Kubuntu Linux and the only theme that has easily readable fonts is the light theme but it's too bright.

I tried to find a setting in ComfyUI to change the font but couldn't. Please offer a new theme that focuses on font legibility as the #1 goal without the interface being blindly bright.

Thank you.

### Existing Solutions

_No response_

### Other

_No response_