I dont believe matching colours is the best approach due to the inconsistancies of wiring colours from China
For intelligent pixels I always use Red for +V and Black for Common ground and then i use green for data and yellow for clock (if used)
For dumb RGB i use Red = red, Green = green, Blue = yellow and common return = black
So i keep to those two standards to ensure i have consistancy with all my different types of lights as some have black as the +v and others have red for +v coming out of the lights there is no consitancy coming from the lights, so i make it consistant by following the above rules with all my cables, if i just tried to match colours instead then im am risking mixing colours when i connect up to the power supply and controller.
So best to come up with a standard that you will follow, this way you dont have to check your lights to make sure your cable colours are what you want because you already have a dedicated cable colour standard and know what colour does what.
I read this and thought - wouldn't it be good if there was an ACL wiring standard for new installations?
Assuming the use of 4 core (red, black, yellow, green) alarm cable, Eddy's colour code is probably about as good as you'll get, but how about a standard for pin connections on the ubiquitous Chinese waterproof connectors? There's some info in the Wiki, but it's hardly a standard.
Personally, (I think) I'll be using:
2 pin (2 core red/black h/duty) for pixel power insertion