Top spinner is hardly visible

[rugk]

Steps to reproduce

1. Set your colour to A2BB59
2. Install "Direct Menu"
3. Click on some app icons.

Expected behaviour

I want to see the spinner.

Actual behaviour

A very light spinner is shown on a light background… not suitable.

Server configuration

Operating system: Debian

Nextcloud version: 11.0.2

Updated from an older Nextcloud/ownCloud or fresh install: fresh

Client configuration

Browser: Firefox 52.0

[MorrisJobke]

cc @juliushaertl because you work on the direct menu app and the theming :)

[juliusknorr]

This is an issue of direct_menu, can you reopen the issue over there:
https://github.com/juliushaertl/direct_menu

This issue might also occur with: #3008