You pick any 10 shades! These are 1/4 tsp samples. I use all clean sterilized clear jars with black lids. I have a very sanitary process I use to transfer the pigments from the MAC jar into the sample container. Here is the list of colors you have to choose from:
CHARTREUSE
SILVER
GOLDEN LEMON
PLATINUM
ELECTRIC CORAL
BLUE
GREEN
BLUE STORM
ROSE
COOPER
PINK PEARL
FROST
GRAPE
DEEP BLUE GREEN
COOPER SPARKLE
ACID ORANGE
RUBY RED
KELLY GREEN
KITSCHMAS
VIOLET
NAKED
PINK OPAL
WHITE
STILL BLUE
SILVER FOG
KELLY GREEN