You can use any combination of colors you want I like three or four colors plus a "grout" color
you will need: a cutter (of any shape, I chose a heart)
a blade to chop
a pasta roller to make a consistent thin sheet for the grout
Step 1: Beginnig
Work your colored clay until it feels right and is not crumbly you can make a sausage shape or a rectangle and wrap the color with a thin layer of the grout color clay.
repeat the same steps with all of your individual colors
then place the colored bars next to each other and combine and lightly roll so that they become one big thick bar of multi colors
and wrap that multi color bar with grout as well.
Step 2: Middle
cut the big bundle of clay with a sharp blade
and cover one side with your grout colored clay before putting it back together
do this over and over until you have many cuts each put back together with Grout clay in between
Step 3: Almost the End
now carefully roll your big chunk into a smaller snake like shape so it reduces to the size that you think looks good.
slice a few pieces off the end of the snake, lay them out and cut your shape out of the clay.
I put two pieces together so that there is pattern on both sides of the earrings.
put a ring in the top of the shape before you bake it.
Bake the clay based upon the directions of the manufacturer
Step 4: The End
When it cools attache the earring hook onto your hear and tada... an earing, if you do two of them you will have a pair.