change color for some words

I have a richtextBox with these words inside like this:

one two three four five six
one two five four six
one four

Is it possible to change the color for the words "four" in any way to blue.

Is it possilbe to use these syntax for this purpose. I am not sure how to do this.
Any ideas would be great :)

Code:

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this->richtextBox1->Select();
this->richtextBox1->SelectionColor = Color::Blue;

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This is managed. It's better if you post in C# if you use managed since this is more meant for native.

Yes ofcourse, I will do that.