The first has no paint and is in my opinion never sprayed with paint, because even with sodium hydroxide (NaOH) the paint is not removed from the deepest grooves and this model is completely paint free. The model does have the silver electrolytically applied underlay to camouflage the dark color of the diecast material.
The second is Metallic Mauve and has no trim. The silver / gray version also has no trim, but this model is not even light mauve.

No paint.

No paint.

No paint or trim.

Lilac-Mauve, no trim.

Lilac-Mauve, no trim.
All information is welcome.
Thanks.
Images resized and slightly brightened by Ghosthunter.