The search box for Confluence 5.7 is white on blue but when you toggle to search SharePoint the box is white and so is the text. You cannot see the text unless you highlight it. Please see the attached screen shot. It appears to be a CSS issue.
SharePoint Connector version 1.9.3.
- Go to Confluence Admin > Custom HTML
- Click Edit
- Paste the following into the field labelled At end of the HEAD
- Click Save
Note: The search box in the admin area will remain white, but all other pages will have a blue box for the Sharepoint & Confluence search.