From the site:
The goal for Twilight Beauty was to create two beautiful and striking lines that women could fall in love with, much in the same way they fell in love with the Twilight saga. The hope is that, beyond the lure of its edgy, sophisticated packaging, true makeup consumers will find they have discovered products they can’t live without.
Luna Twilight reflects the mood and spirit of the beloved book and film series with the highest caliber products and visually stunning packaging. Gold shining through the translucent black represents the light coming through the darkness, the power of Edward's love for Bella despite the obstacles that stand between them.
The Volturi and their kind are creatures of supernatural beauty that transcend time. The line has a sharp clear prismatic quality halved with a solid timeless black, symbolizing the never ending struggle between good and evil, right and wrong, love and lust.