是的，确实有可能.(请记住，每次更改后都要重新启动Rstudio)

Yes it is indeed possible. (Remember to restart Rstudio after each change)

我没有ACE方面的经验，但是要获得不同变量的含义并不难.例如

I have no experience about ACE stuff, but it's not so hard to get the meaning of the different variables.. e.g

.ace_constant.ace_numeric {
  color: #4ef971;
}  
...

.ace_string {
  color: #6A8F9D;
 }
...
.ace_keyword {
 color: #85cfda;
 }

分别是数字对象，字符串和关键字(函数内置和控制台内置)的颜色

are, respectively, colors of numeric objects, strings and keywords (built in-functions and console)