The test you took at where? the TP licensing branch at your
school?
Not sure about the test colourblindness test procedure but
afaik, the schools do not test for ur colourblindness as that is
the purview of the licensing dept.
So did they approve your PDL or not?
You might need to do a more stringent test?
I think colourblindness is ok as long as you can see red, amber
and green maybe blue also.