faiding

Hi, I've just sold my Ibiza FR and still have the Seat bug, I've spotted a 2005 Leon Cupra R in red that im interested in. However having owned a 2002 Leon Cupra in Ovni yellow prior to the Ibiza it suffered terribly from fading (a common issue), i'm also aware it affects red quite badly too...

Crap title I know. Basicaly this morning on way to work noticed that the clock/mpg lcd display was faiding slightly, nothing too much, so I turned off the radio and wipers and noticed it was still doing it a little, even when stationary. Looks like some slight power drain? anyone else...