since the last sfm update you may have noticed a few scripts stopped working. after much investigating the reason has been found.
Apparently, valve removed a bunch of files for python those scripts need to work. but not completely,
C:\Program Files (x86)\Steam\steamapps\common\SourceFilmmaker\game\sdktools\python\2.7\win32\tcl
copy ALL the files and folders there. then go to
C:\Program Files (x86)\Steam\steamapps\common\SourceFilmmaker\game\sdktools\python\2.7\win32\Lib
(basically go back one and pick the other folder) and paste all the files from the tcl folder there.
that will fix the color change script (and possibly other issues as well, but that is unknown). to fix sfmphys you have to do all that, and a couple more steps.
first, grab the newest version from http://sfmbox.com/sfmphys/
then, grab this https://www.dropbox.com/s/qedogo76cvamwk9/phys_simulate.py
install this in
C:\Program Files (x86)\Steam\steamapps\common\SourceFilmmaker\game\platform\scripts\sfm\animset
that's it. it should work for you.