I'm working on a drawing where all items are on layers set to colour 8. However the majority have had the colours changed in the object colour dropdown box. I have exactly 23676 items to now change back to bylayer so that all colours show as colour 8. The problem I have is when I 'select all' the object colour dropdown shows they are all by layer and therefore wont let me change them all at once. I have even tried changing them to red, yellow etc just to see if they change but they dont. I can however select a small group and then it will let me change these all together.