Technology colors automatilly changing the creo set colors.

I am using EMX10_M010 and I have issues of automatic color change of creo set colors, when adding emx udf's to it.

our work flow as blow.

1. set color to ejector plate faces as per our color code system. (color system is set in appearance gallery)

2.add ejector pin, so ej pin pocket UDF added to ejector pin. (technology color is already set to ejector pin pocket)

3.Save the file

4. close creo & reopen creo assembly.

(at this point  the color of ejector plate (set as per point no1) and the color of UDF are changing to some other  colors ( or it shuffles) and this makes a problem. This problem is not occurring in assembly. it comes as a random.

for info, I edited the color definition.cfg file in configuration folder and added colors as per our color code system. I am not sure this is creating the problem or not.

please let me know how I can solve this issue.