Install comand transcolorplot

Hi, Stata users!
I would like to use the command transcolorplot introduced by Van Kerm in this paper http://medim.ceps.lu/stata/transcolorplot03.pdf . Following his advice, I tried to install the command by writting on Stata
ssc install transcolorplot
but Stata replied
"ssc install: "transcolorplot" not found at SSC, type -findit transcolorplot-
(To find all packages at SSC that start with t, type -ssc describe t-)".
Could anyone inform me if there is other way to install this command?