Sorry, I was being sloppy in my terminology; my intended audience was people who do speak C++. At this point I'm not sure how guilty I should feel about wasting people's time, since I decided to use gedit. Here's a simple example of what I had in mind:
#include<vector>
using namespace std;
int main(){} // whatever
vector<int> v;
In the example above, <int> is colored yellow (last line). I don't think this is good, and I don't think it was the intent of the person who wrote these rules.
It's just a side effect of the rules that turn <vector> yellow (first line).