today is your lucky day then
over write your ARCADE template with the attachment
then open up the
ARCADE.css and copy it completely
now paste it into the
additional.css
click save...
now go to
Plugins & products > plugin manager > Product : ibProArcade for vBulletin >ibProArcade: ARCADE CSS
and select
no for "Plugin is Active" ...
thats it turn store css as a file back on
enjoy