Tertiary colors are the colors made by mixing a secondary and the primary colors.
Here are the list of the tertiary colors
= > yellow green
=> yellow orange
=> red orange
=> red violet
=> blue violet
=> blue green
The answer is repousse. It is a method having to hammer
something from the reverse side to produce relief such as to imprint a design
using the other side rather than using the front side of the metal in which it
is described above.
