In the US, you are entitled to reasonable accommodation under the Americans With Disabilities act.
Almost all the stuff I have seen on the ambulance which is identified by colors is also identified by numbers and/or words and if they aren't, there are reasonable alternatives available. For example, you can get proper triage tags or triage tape which not only has the colors but the words deceased/minor/delayed/immediate printed on it in place of unprinted colored triage tape. Needles, I/O drills, airways, broselow tape/bags, etc.
One exception is the colorimetric CO2 indicator for airways adjuncts. You can always use a decent patient monitor with real capnography or use a pocket RGB colorimeter with the crude CO2 indicator. Here is a random example of the type of colorimeter which can be used.
http://www.ebay.com/itm/Color-Space...987533?hash=item3ce7ae258d:g:PTgAAOSwfcVUCdf7
You can also get android apps that will do colorimetry using the built in camera.
LedScope is a primitive (hue only) one that converts to an angle.
https://play.google.com/store/apps/details?id=com.mkrscope.ledscope_trial
Another, ColorMeter Free, gives you RGB values:
https://play.google.com/store/apps/details?id=com.vistechprojects.colormeterfree
Another also gives color names:
https://play.google.com/store/apps/details?id=com.beanslab.colorblindhelper.helper
And this one understands the CIE chromaticity diagram which is used by professionals in stage lighting,computer graphics, and other fields to understand color:
https://play.google.com/store/apps/details?id=b4a.colorspace
There is also an app, dankam, that helps the colorblind see colors in an image by shifting the colors to ones that can be distinguished.
http://dankaminsky.com/2010/12/15/dankam/
https://play.google.com/store/apps/details?id=jp.ne.nama.chromatosupportcamerafree
One could also write an app that would flash the red, green, and blue planes of the camera image in sequence.
Daltonizer is one of several apps that does the opposite, it makes regular people color blind:
https://play.google.com/store/apps/details?id=fr.nghs.android.cbs
Likewise, skin color, stool color, sputum, blood, and emesis can be measured with a colorimeter.
There are also colormax, oxy-iso, enchroma, and x-chrome glasses which shift the colors enough that some colors which were previously indistinguisable can be distinguished, though perhaps at the expense of other colors.
. In California you just have to be able to distinguish red from green-they can show you several colors and you tell them what is what.Color blindness is actually quite common with males(more than females)and red/green is the most common color issue.I could not be an airline pilot because of my issue,but I do paramedic no problem.If you have SEVERE color blindness and can't differentiate colors at all that COULD be an issue-but that condition is extremely rare.I was taught to read so I don't think I have ever given the "wrong" color iv catheter-besides I go by size so color wouldn't matter(and different medical supplies companies use different colors sometimes for the same product.BTW,my father was a decorated military aviator AND flew commercial aircraft(up to the 747)and he had problems with those stupid cv test-so he just memorized the numbers in the book for years and he never crashed any planes....or did he???