Is there a way to make emacs display different functions in different colors?

[yoyobeermam]

For example, in Monodevelop, when you make a comment in your script like this

//This text is only a filler

it will turn it green. Other functions have differing colors too. I would like 
to know if it is possible to make Emacs do this? I would be using Monodevelop, 
but it refuses to open, and because I'm renting my machine from my high school 
(MacBook Air) it has strong parental controls and I cannot dig around in the 
system for a solution. I'm still new to programming, so having these functions 
in different colors really helps me to know if i entered it correctly, and 
helps me locate things when debugging. If you can't, could you let me know of a 
script editor that supports C# and this functionality?