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There was a video of the newsnight studio powering up at about the time Channel 5 claimed they were getting rid of noddys and the boards cycled through several colours before they reached newsnight's purple. I presume this is the scroller?
Colour Scroller - fits on the front of most types of generic light - many different sizes are available.
http://www.usedlighting.co.uk/files/imagecache/large/images/UEQ-RAIN8PRO.JPG?
You can see several scrollers in this photo of TC7, especially around the far side hung light box thing.
http://farm1.static.flickr.com/112/258634954_fc58cdb063_z.jpg?zz=1
http://www.flickr.com/photos/belowred/258634954/sizes/o/in/set-72157594192557796/
Whilst you can get scrollers and other similar motorised gel lamps (in fact at least one BBC News studio uses scrollers for lighting the header boards above the Barco walls)
There was a video of the newsnight studio powering up at about the time Channel 5 claimed they were getting rid of noddys and the boards cycled through several colours before they reached newsnight's purple. I presume this is the scroller?
Colour Scroller - fits on the front of most types of generic light - many different sizes are available.
http://www.usedlighting.co.uk/files/imagecache/large/images/UEQ-RAIN8PRO.JPG?
You can see several scrollers in this photo of TC7, especially around the far side hung light box thing.
http://farm1.static.flickr.com/112/258634954_fc58cdb063_z.jpg?zz=1
http://www.flickr.com/photos/belowred/258634954/sizes/o/in/set-72157594192557796/