You can copy a level's attributes in a reference to a level of the same name in another attached reference(s). These attribute changes in the attached reference are for view or plotting purposes but do not change the actual levels in the source file since references are view only. For example, if Level 1 is green in the selected reference and blue in the another attached reference(s), you can copy the attributes from the selected references to any other reference attachment(s) that contains that level.