Kitty knitty

Hi people!
I've been thinking of new things to do with shadow knitting. One way I'm interested in is mixing colourwork with shadow knitting to overlay patterns(Bob is doing some similar experiments).
So I was fascinated when I saw these Chesire cat socks - if you remember Alice in Wonderland, when the Cheshire cat disappears, it's grin stays behind:

`All right,' said the Cat; and this time it vanished quite slowly,
beginning with the end of the tail, and ending with the grin,
which remained some time after the rest of it had gone.

`Well! I've often seen a cat without a grin,' thought Alice;
`but a grin without a cat! It's the most curious thing I ever
saw in my life!'

So I'd like to portray this using shadow knitting. I'll make a cat design in shadow knitting, then I'll add the mouth with coloured yarn. Because the grin will be worked across the stripes, it will be visible from all angles, whereas the cat will be made up of raised and lowered stripes it'll only show up from some. The cat design will need to be very simple, shadow knitting isn't well suited to intricate detail, so it'll just be a very simple cartoony cat's face.
And I'll make this into a scarf. I haven't made a scarf for ages! I'll need to see what nice scarf yarn I can find which would suit this.

Hugh.