Odd Radome

The Durham Tees Valley Airport spotters web site has a photo of a Javelin Radome:

http://dtvmovementscouk.fatcow.com/images/Residents_Current/MiscOther/sr_javelin2.jpg

Can anyone say what the colour scheme is for? I’m quite happy that it’s Javlein, I saw another like it a long time ago, it definitely wasn’t this one. One the radome I saw there was also a light blue segment, which may be on the other side of the pictured radome.