Basically, either the colors are the same in the chat box, as in, if an ally pings "Need Assistance", then the text will be blue. Enemy is missing, the text can be yellow. Alert, red. And so on.
Or being able to alter the way it appears in the chat box.
I find it quite hard to see if an ally pings ss, while everyone else is using other pings, or spam pinging with no context etc.
Enlarging the chat box isn't an option because I find it intrusive whenever I change it from the standard position/size :v