Lining Paint and Heat

I painted my SCC's cylinder cleading using Craftmaster paint: 2 coats each of primer, Dark Red undercoat, & Plum engine enamel gloss.
I then applied Black, Red, and Holbourn Cream lining paint.
I finally put on two (actually four) coats of varnish.

After four steamings, the Cream lining around the engine still looks Cream. However, on the cylinder cleading after only one steaming, the Cream has turned a bizarre shade of pinky-orange.

Adam from Craftmaster says he's not had complaints about this before, nor has he ever seen it. We're wondering whether the Plum has bled into the Cream.
Has anyone else had this problem, and what did you do about it?
One idea I've had is to paint over the Cream lines now there's a layer of varnish in between. But this is a fix, not a solution!

Hi

You will find the under colour has out gassed in to the Ivory when everything got hot. A layer of varnish between would help or now that the area has been baked. a rub down and recoat of the ivory should work better.

Thanks Lynn. I'll redo it over the winter, once I've got everything else sorted out!

Thanks Lynn. I'll do that in the winter once I've got everything else sorted out.