The colors are really quite beautiful in person. The base of the liner has the hint of color (for instance, look at the swatch of Lavender below - see how the background shows the bright purple shade?). The glitter then compliments the overall shade of the liner. Because of their basic transparency, these are beautiful on their own for a subtle look, or you can apply over your favorite liner to add some *umph* to the shade. I personally love to use these over black, but they are just as beautiful over any deep shaded liner.
Disco Queen is a deep, almost-black, shade with various irridescent shades of glitter. I get lots of blues, red and greens when I look in the tube, but upon movement you also see crystal, silver and golds. This is a beauty of a shade!
Lavender is just that - a bright and gorgeous irridescent purple. There are also hints of blue, pink and turquoise in the liner as well. This is so pretty on it's own, but I applied it over a basic purple liner and it just made it pop!
Below are all the other colors available, and from my memory, these are very true to life. I just love the variety!