App theme updates

[kildre]

Added updates to the Nebari theme. Amending colors to use themeing colors and configuartion. Updated logo to a CDAO | Nebari logo

Reference Issues or PRs

https://gitlab.jatic.net/jatic/team-metrostar/t-e-platform/-/issues/669

What does this implement/fix?

Put a x in the boxes that apply

• Bug fix (non-breaking change which fixes an issue)
• [x ] New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features not to work as expected)
• Documentation Update
• [x ] Code style update (formatting, renaming)
• [ x] Refactoring (no functional changes, no API changes)
• Build related changes
• Other (please describe):

Testing

• [ x] Did you test the pull request locally?
• Did you add new tests?

Documentation

Access-centered content checklist

Text styling

• The content is written with plain language (where relevant).
• If there are headers, they use the proper header tags (with only one level-one header: H1 or # in markdown).
• All links describe where they link to (for example, check the Nebari website).
• This content adheres to the Nebari style guides.

Non-text content

• All content is represented as text (for example, images need alt text, and videos need captions or descriptive transcripts).
• If there are emojis, there are not more than three in a row.
• Don't use flashing GIFs or videos.
• If the content were to be read as plain text, it still makes sense, and no information is missing.

Any other comments?

<img width="1477" alt="image" src="https://github.com/user-attachments/assets/fd8050ee-38c8-442a-97b7-

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[jbouder]

In addition to the comments, a few other things:

1. Remove the CDAO logo
2. These changes do no provide a mechanism to override the header colors based on what is provided as a config. You'll need to update this file to handle those: jhub_apps/static/templates/style.css

[jbouder]

In addition to the comments:

• Still need to remove the CDAO logo
• The css provided in the style.css overrides the default JupyterHub header styling, but still doesn't override the MUI header styling. Need to address that.
• I can't seem to test your changes locally. I'm not seeing updates applied to JupyterHub, need to troubleshoot that

[jbouder]

Looks great!