The blue, white and yellow front number board/head light surround are all painted, the stripes, seat unit number boards and logos are decals on the 28 & 21. Not so sure on the mc18

Which model and decals are you looking for? Most are no longer available from Honda and are not cheap if they are available. I do have some new oem mc28 decals spare though.

Cant remember the name of the company on e**y that sells the replica kits but I'm told by those who have used them they are good copies but will need laquering over as are not petrol resistant.