This page compares all four varieites in various stages of development. Rememeber, color (and markings) will change with every molt. Himalayans are temperature sensitive; in other words, those kept in colder climates (and conditions: a/c) will generally have nicer color. However, genetics always play an important role.
All photos by Sarah or Susan Rascón. Please do not use in any way without permission.

Black is to be a rich, velvety black. The darker the color, the better.
Blue is to be a rich, dark blue.
Chocolate is to be a rich, dark chocolate brown.
Lilac is to be a uniform, medium dove-grey, with a pink tint on the surface.
Black vs. Blue

Ears and nose smuts, Seniors.

Nose smuts at 2 months old.

Ears at 2 months old.

Tails at 2 months old.
Black vs. Chocolate

Ears and nose smuts, Seniors.

Nose smuts at 3 weeks old. Chocolate on left.

Tails at 3 weeks old. Chocolate on right.
Chocolate vs. Lilac

Seniors.
Blue vs. Lilac

Blue - Lilac
Seniors

Blue - Lilac
Seniors

Blue - Lilac
Seniors