As a stopgap, you can color by bfactor by using a script I’ve attached.  I’m attaching two scripts, one a generic color-by-bfactor that can be used for anything in the bfactor column.  You would edit the values at the top of the script to choose low-high coloring or low-mid-high coloring, and what values to associate to what colors.  The other script is tailored to ConSurf output in that it knows the nine ConSurf colors and colors only those residues whose bfactors are all equal and are integers in the range 1-9.  You just open the ConSurf-generated PDB and then open the script (which runs it).  I’ve attached an example output image (2gbp).

—Eric