Thanks for sharing this NBC press release with us, it's a great read, interesting how they mentioned Dinah Shore Show will be scheduled for colour in January 1954 as there is colour kinescope footage of that particular show in existence which Ed Reitan presented at the Early Television Convention in 2007, I so wish I was there to see it.
Also on the subject of halos, have a look at this Dinah Shore clip
http://au.youtube.com/watch?v=3dqoJxjQn-Y , you see some real major haloing on her sequined dress.