change the roll up menu icon color to have a better contrast ratio

[rlucke]

change the roll up menu icon color to have a better contrast ratio

fix #631

[github-actions]

Hi @rlucke
Thank you for contributing to the Opencast Editor.
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[github-actions]

This pull request is deployed at test.admin-interface.opencast.org/647/2024-06-05_13-33-00/ .
It might take a few minutes for it to become available.

[github-actions]

Use docker or podman to test this pull request locally.

Run test server using develop.opencast.org as backend:

podman run --rm -it -p 127.0.0.1:3000:3000 ghcr.io/opencast/opencast-admin-interface:pr-647

Specify a different backend like stable.opencast.org:

podman run --rm -it -p 127.0.0.1:3000:3000 -e PROXY_TARGET=https://stable.opencast.org ghcr.io/opencast/opencast-admin-interface:pr-647

It may take a few seconds for the interface to spin up.
It will then be available at http://127.0.0.1:3000.
For more options you can pass on to the proxy, take a look at the README.md.

[ziegenberg]

Hi @rlucke,

thank you for your PR. Can you elaborate a little bit on what was done here?

[lkiesow]

If you are like me and wondering what the hell this roll up menu is:

Looks good. Merging.