First take the label off the bottom of the shadow.
Next get a knife and slit along the join in the cardboard. You should be able to rip it off.
Then you just need to peel the cardboard padding bits off the bottom of the pan.
Once you've done that and scraped the glue off you can stick the colour label to the bottom of the pan.
Et voila, depotted Stila shadow ready to put in a palette.
Unfortunately I haven't found a way of depotting them without ruining the packaging.