Paint color removed another paint color

[Plasticated Guy]

I've been working on a Revell 1971 'Cuda and it's in the final stages of body detail. I had just applied turn-signal amber over silver on the side-marker lights. Both colors are Testors and in a bottle. When I started to apply the amber it somehow rubbed the silver off. The silver had dried several days prior. I have a set of decals that will correct this problem in a pinch but I would like to know how this problem occurred. 

[Mark]

The solvent in the amber softened the silver paint and got it going again.  Of Testors brush paint colors, silver in particular is the slowest to dry and the easiest/quickest to soften up again.

[gman]

^^ this. If you are using Testors enamels, they take an extremely long time to fully "dry" beyond just an outer skin on the paint. If there is enough solvent in your second color, this will dissolve that dried skin pretty quickly.

A good solution would be to use an acrylic for the amber lens color (such as Tamiya). The solvents shouldn't impact those in the Testors silver, and you can flow enough amber in to simulate a lens.

 

[thatz4u]

or use an orange fine point sharpie pen, works also

[StevenGuthmiller]

Use foil for the reflector, then you can use whatever you want for the lens.

 

 

Steve

[Bills72sj]

I have had the best luck using BMF then coloring in amber with a "Marigold" colored Ultra Fine Point Sharpie.