Could you ADD
 
Colour INT 
 
TO Division please

CREATE TABLE DocumentType(DocumentTypeID CHAR(20) PRIMARY KEY, "Description" CHAR(50), "Class" CHAR(1));
ALTER TABLE OLEDocument ADD DocumentTypeID CHAR(20);
ALTER TABLE "pears"."oledocument" ADD FOREIGN KEY "DocumentType" ( "DocumentTypeID" ) REFERENCES "pears"."DocumentType" ( "DocumentTypeID" ) ON DELETE SET NULL;