That's one of the resources I've used to land on RAL-6027. But I do like the sea foam green Andy has leaned towards (and the swatches I have match my saddle).
Honestly I'm still waffling between celeste (and which one!), original satin black (got a good match I think), and white like the Campione D'Italia Sport SX and Strada LX models had in 89/90 (and Campione for some late 80s early 90s period) for my Giro. Not sure I'm any closer to deciding, but still on the backburner for now priority-wise. I was able to order swatches for several RAL colors from Columbia coatings. I don't know if they'll actually ship (not an option to order RAL samples from Prismatic).