Old factory + middle of night...C&C please
no man. indiana jones style, i even did all this by myself. this particularl factory is known to be very safe (nobody ever goes there). but i am an avid urban explorer, so I am familiar with all the risks.
my setup to switch out colored gels is real basic. on my 199a there is a slot between the diffuser and flash that the gel can fit into. see pic