Proposed change via https://gerrit.wikimedia.org/r/441899:
The patch changes two details:
- Why is the text on the buttons blue? I believe this color was introduced by mistake once and then copy-pasted around, but never meant to be like this.
- The gray box that contains the "Import" and "Cancel" buttons was different from the regular wikitext editor, where it is 1 level darker.
- This also solves the issue with the "Cancel" button being a seemingly "transparent" outline only.