select all
cartoons on
wireframe off
cpk off
color blue

pause
restrict dna
cartoons off
wireframe 75

pause
define set1 *.O? and dna
define set2 *.OP?
define set3 *.N? and dna

pause
select set1
cpk 150
color red

pause
select set2
cpk 150
color yellow

pause 
select set3
cpk 150
color green