Model Master, Pactra and Aztek brand paints have been discontinued but there are still many options out there for model railroaders.
Testors — News Archive — Roger's Hobby Center
Paint & Detail Railroad Models with Scott Lupia
Presented To You in Living Color - Iron Modeler
Testors paint and decal remover will destroy some plastics - Model Railroader Magazine - Model Railroading, Model Trains, Reviews, Track Plans, and Forums
Testors Paint is Being Discontinued - RCU Forums
Paint, Tools and Supplies
MRH Dec 2011 - Issue 22 by Model Railroad Hobbyist magazine - Issuu
Rolling Stock Waterloo Region Model Railway Club
RUMORS: Testors Model Master Line Being Discontinued
Tamiya Acrylic Paint
Marklin 39425 Class ICM-1 Koploper Electric Rail Car Train
Testors Discontinues Popular Lines of Model Paint - Railroad Model Craftsman