Japanese 45s were released with standard orange labels for commercial releases with either a single  or double  sided insert as a sleeve. 
All commercial releases have equivalent promotional white label variations  with the same art work as used on the original release.
Japanese EPs have a standard carton hard cover with an insert. Some have a gatefold sleeve as well.  The label design is standard white and orange with a closed spindle hole.  A few Japanese test pressings exist all with b&w covers.