Here you can download Supernova furfiles. If you notice one missing I'd appreciate if you'd let me know, and I'll add it.
Unless otherwise mentioned, all of these furfiles are PKC accepted. To save one, right-click and choose Save As. They should be in the proper format etc.

Catz Textures

Sepia agouti

Set transparency as 0
Accepted on singapuras.

Shaded silver/Cameo
Set transparency as 0
Accepted on all breeds. See the PKC Wiki Standard definition to see which furfile goes where, which ones are accepted in which breeds etc.
Black silver: 

Blue silver:

Chocolate:

Cinnamon:

Fawn:
(Use same furfile as cinnamon for main body)

Lilac:
(Use same furfile as chocolate for main body)

Cream/Red cameo:

Blotched tabby






Set transparency as 105
Accepted on all except curly-coated breeds. Partially transparent. The second furfile is for use on the face, legs and tail.

Brown tabby


Set transparency as 0. Accepted on all except rex/curly coated breeds.
From left:
Base colour (for non-tabby areas)
Blotches (use on body)
Horizontal stripes (use on legs, face, tail)
Vertical stripes (use on body)
Spots (use on body)
Rosettes (use on body - only allowed in leopards)
2nd row: Mackerels - made by Mandi of Cargo!

Spotted leopard tabby

Set transparency as 105
Accepted on all except curly-coated breeds. Partially transparent. Use the above matching striped furfiles for face, legs and tail.

Mackerel / Leopard

Set transparency as 105.
Accepted on all except curly coated breeds. The first is for face/legs/tail, 2nd for body. These can be used for all mackerel tabbies. The last one is only for leopards.

Spotted tabby

Set transparency as ?
Accepted on all except curly-coated breeds. Use a striped furfile on the face, legs and tail.

Ticked tabby

Set transparency as 1
Accepted on all ticked breeds. Transparent.

Tortie/Torbie furfiles

 
Set transparency as 0.
Accepted on all except curly/rex coated breeds.

Rex tabby


Set transparency as 0.
Accepted on all rex/curly coated breeds.

Dogz Textures

Brindle

Set transparency as 25
Accepted on all breeds. Partially transparent.

These are both accepted on all breeds. 
First is a sparse brindle. You can use it as opaque, 35 to change stripe colour or 45 to change base colour.
Second is a heavy brindle. It's accepted on breeds that can have a dark (ie 95/35) brindle.

Grizzle/Sable/Fawn/Tipping

Set transparency as 6
Accepted on wirehaired terriers. Partially transparent.

Set transparency as 25
Accepted on all breeds that allow such tipping. Partially transparent.

Merle

Accepted on all breeds. Set transparency at 0.
First is for blue merle, next four are red merles, and last is an isabella merle.

Skin/Coat

Set transparency as 1
Accepted on corded breeds. Transparent.

Set transparency as 0
Accepted on bergamasco. Opaque.

Ticking/roaning furfiles


Set transparency as 85
Accepted on all breeds. Partially transparent.

Set transparency as 0
Accepted on all breeds. Not transparent.