In a similar vein as this question...
Are there any conventions or standards that recommend a color scheme for the colors of Ethernet keystone jacks?
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My personal experience is that we use whatever color matches the paint in the room its in, unless it is one of the following:
Red: Hospital Monitoring Equipment
Blue: Security Cameras
Green: Any separate LAN or VLAN connection (ie. radiology has a few of these)
I don't believe there is a specific standard for them.
Correction: as Comments state below talk to your AHJ
Here is the standard I use across our WAN
We also use a color coding standard for the cables. - Blue cables for data - Yellow cables for Voice and phones - Green for Audio/Video (Televisions, cable boxes, etc.) - Purple for Wireless access points - Black for security cameras - Red is reserved for Fire systems and alarms