Mettre un bandeau de couleur sur l'admin de la prod

[mjeammet]

Feature Request

Is your feature request related to a problem or unsupported use case? Please describe.
Comme ça on fait pas n'imp en ayant par exemple plusieurs onglets

Describe the solution you'd like
A clear and concise description of what you want to happen. Add any considered drawbacks.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Discovery, Documentation, Adoption, Migration Strategy
If you can, explain how users will be able to use this and possibly write out a version the docs (if applicable).
Maybe a screenshot or design?

Do you want to work on it through a Pull Request?