Hello !
Thank you for your answers. I have this kind of plate at my car so i think i now understand how to find the code of color. As i can se it is Gelb 25.
Another question. Color at the engine. Blue,black ,red or ?. How can i knew what color my engine should have ?

You could check the color of the motor with this one:

Nuno

Thank you. I have a 1964 P3 Super 1,7 so as i understand it should be blue.