Formula's to making colors?

May be...

please help!!! i only have 2 hours to know this!!!

,what are the formula's to making the colors:

- red

- blue

- violet

- green

- orange

- yellow

- black

- gray

First, red, yellow and blue are primary colors, you can't mix them. You just have to have them.

Mix:

red and blue to get violet...

blue and yellow to get green...

red and yellow to get orange...

black and white to get gray

black can be mixed from red and green, with a lot of each, usually (but that depends on what pigments you are using: Alizarin Crimson and Thalo Green work pretty well).