Pink, blue or plain linen. Hope that helps

Seriously, we don't know what the "truth" is as afaik the only surviving example has lozenge rib tapes, everything else is down to interpretation of b&w photos. Your choice.
Dan San Abbot stated that most Roland DVIs had CDL rib tapes. WNW calls out CDL for non-lozenge rib tapes on the DVIa and b kits and I'm going with that for mine. Mainly because Aviattic do decals with CDL tapes......