The four shades are:
Glimpse - A warm, red toned brown that has been formulated for red and auburn hair tones.
Strike - A deep, cool toned brown tone that should suit most brunettes.
Awe - A light, grey based taupe that has been created for blonde, grey, white and fair hair tones.
Stare - A deep yet cool toned slate grey that is almost a soft black, it goes without saying that this has been created for black and deep brunette hair tones.
You can find all four shades via Illamasqua for £18.50 each - link.