The workshop proceedings covers are fairly standard and should match past ACL workshop proceedings and also the ACL conference proceedings. The proceedings covers should be text only, in the color scheme of the main proceedings. As with the main proceedings, the cover page of workshop proceedings should not include the names of the workshop organizers, but these may appear on the inside cover page.
For an example of the workshop cover page for a workshop held at ACL-02, see workshop-cover page-02.