Hello Cessnasay,
I am colorblind and worked as an aircraft engineer for 9 years.
I never had to undergo any medical check (I have a Swiss JAR66 B1/B2), and I never had any problems during my daily duties.
The only problem you might have is to hold a boroscope authorisation, where in my company a medical check was requiered every 2 years.
Good luck,
og