The last couple of responses must be from folks who don't have CZs (or no CZs with the polycoat finish.)
I only said Cold Blue because he said the guy on the phone told him to have a smith put a drop of blue on it.
You're right it won't look normal with the polycoat finish. Another option, in addition to body paint:
Know the status of your weapon
Keep your muzzle oriented so that no one will be hurt if the firearm discharges
Keep your finger off the trigger until you have an adequate sight picture
Maintain situational awareness