Color notes

The three primary colors are Red, yellow and blue. Secondary colors created by mixing primary colors, for example one is orange. You get teritary colors by mixing the secondary colors, an example of one is red-violet. With subtractive colors you start with white and end with black where as with additive colors you start with black and end with white. Color affects our perception by making food appetizing and other examples such as that, for example, blue is not a color that usually appears in nature so blue food isn’t usually appealing. Colors affect each other by changing the shade, tint or hue of the color or it may even change the whole color. 

Here is a grey scale image

Here is a monochrome image