ipywidgets do not respect color theme

[robtovey]

Duplicating tqdm/tqdm#1457 because I think the issue lies in the vscode extensions rather than tqdm or ipywidgets.

Whenever I create a tqdm progress bar in a vscode notebook, it renders in "light mode" rather than matching the current theme. Having a play, it looks like this is also true for the underlying ipywidget.IntProgress object. For example:

This is on a fresh python environment with:

• ipywidgets=8.1.5,
• notebook=7.2.2,
• tqdm=4.66.5,

and vscode Jupyter=v2024.7.0 batch of extensions, of which I'm guessing the important one is notebook renderer=v1.0.19.
My settings json has the line "workbench.preferredDarkColorTheme": "Default Dark Modern"
The setting "jupyter.themeMatplotlibPlots": true/false has no effect.

Hopefully there is enough here for you to triage exactly which library/extension is at fault, I apologise if this is the wrong place for posting!

For context, there are also stack overflow questions for this as well:

• https://stackoverflow.com/questions/71534901/make-tqdm-bar-dark-in-vscode-jupyter-notebook
• https://stackoverflow.com/questions/75429196/vs-code-jupyter-notebook-dark-theme-for-interactive-elements

There is some suggestion that vscode "can't theme ipywidgets", but I'm pretty sure JupyterLab manages it.

Thanks for your help

[DonJayamanne]

Duplicate of microsoft/vscode-jupyter#7161