[Feature] Ability to set Dark Mode only

[Bortus-AI]

Description of the feature

I saw that with the widgets you can specify light or dark theme but did not see that env flag for when launching dashbot via docker or from source.

I would like to be able to have it default to dark or disable light all together

Additional context

No response

[MauriceNino]

Makes sense, I can add a configuration variable, similar to DASHDOT_CPU_CORES_TOGGLE_MODE.

[Bortus-AI]

@MauriceNino That would be awesome. My light sensitivity thanks you haha