Card colo(u)rs

[Richmond]

So, there I am, merrily making a stack using LiveCode 7.0.5 with 3 cards 
(sophisticated stuff),
and I wish to have each of the cards with a different backgroundColor.

Setting the colour of card 1 via the prefs palette was easy, as was

setting the colour of card 2 via the prefs palette, HOWEVER

setting the colour of card 3 via the prefs palette resulted in card 2 
ALSO ending up that colour

(i.e. cards 2 and 3 have the same backgroundColor)

which is a pain in the b*m.

Richmond.