Roland Ranfft is offering two re-luming pastes with excellent instructions on their use (as in Mark's video). One is based on the phosphor Zinc Sulphide (ZnS) , the other on Luminova. http://www.ranfft.de/cgi-bin/bidfun.cgi?10&ranfft&b7&1usem&1456959600 http://www.ranfft.de/cgi-bin/bidfun.cgi?10&ranfft&b7&1usem&1456959601 These will glow for a few hours after exposure to sunlight (phosphorescence). The early Radium luminous dials and hands glowed continuously d