Can anyone explain the technical differences between the different colored BMW fuel injectors?

I was going to pick up spares at a recycling yard, but I could not find the same colored set. Would another colored set work ? Can they interchange ?

Where can I get injector information online ?Can anyone explain the technical differences between the different colored BMW fuel injectors?most manufactures use color to identify cfm output on injectors. if you install injectors with the wrong color code you may either end up with a rich condition or a lean condition. stay within factory spec's. hope this helps.Can anyone explain the technical differences between the different colored BMW fuel injectors?The color of the plastic top on the injector has nothing to do with what the injector flows or ohms, this is only holds true for GM 220 TBI injectors. If you want to be sure you get the right injectors for your BMW check out www.fuelinjector.citymaker.com they have a complete online catalog and only sell OE injectors, your wasting your time looking for injectors in a junk yard. the hardest thing on a electronic injector is sitting. they become stuck open and can even rust inside and then they are junk.