As I understand the laws of colors;
Of all the colors in the universe, only three are pure. Red, Blue and Yellow.
They cannot be made by mixing any other colors.
I think those two are indeed refutable.
Primary colors are a choice, not something handed down as physical laws. Additive color systems, such as those that mix light to produce intermediate colors, need three or more primaries to provide a non-trivial gamut, but the choice of those colors is made by the system designer. When using three colors, they are usually a red, a green (not yellow) and a blue, but the exact characteristics of each of the three colors varies from system to system.
In subtractive color systems, such as those used in printing, again, three or more primaries are needed, but in this case, it's usually more. The standard set of printing primaries is cyan, magenta, yellow, and black. There are many different choices for each of these. In modern printers, these primaries are often supplemented by different colors with the objective of increasing gamut: Epson uses green and orange, for example.
Mixing pigmented paints is more complicated, and has aspects of both additive and subtractive color, with some of its own peculiarities thrown in.
In additive color systems, any non-spectral color. including one or more of the primaries, can be created by mixing two other colors chosen from the gamut of all visible colors.
Color is complicated, and is not easily boiled down to simple "laws."