Color vision for network techs

[Berry Mobley]

Hello,

Do any of you do any color vision screening in your interview 
process? How do those of you with color vision impairments 
compensate? I'd never considered this until I was in one of our 
facilities with my son (who has limited color vision) and we had a 
discussion about the LEDs. He could only determine on/off - not 
amber/red/green on the equipment we had. I'm wondering if we need a 
color vision requirement (or test) as part of our hiring requirements.

Berry Mobley