How to change color of font? - sublimetext3

Question

How to change color of certain type label of syntax?
I know that there is file of color scheme but what line of that file is related to colors of certain label (e.g. class or function).
For example, there is a piece of code in Sublime Text 3:
I do not want to see label 'Node' (that is class-label) yellow but want to see it blue. How I can do it?

Answer 1

To do this you need to make a modification to the color scheme that you're using to tell it to color things in a different format. In particular, you need to know two things:
The color scheme that you're currently using.
The scope of the thing whose color you want to change.
To determine your color scheme, look in your preferences for the value of the color_scheme setting. Here I'm going to assume that it looks like this:
"color_scheme": "Mariana.sublime-color-scheme",
Depending on how you set up the color scheme this might have part of a path as well, like Packages/Color Scheme - Default/Mariana.sublime-color-scheme instead. The file may also have a tmTheme extension instead of sublime-color-scheme if you're using a legacy color scheme.
To determine the scope you need to change, put the cursor on the thing whose color you want to change and use Tools > Developer > Show Scope Name (or press the key that menu tells you about), then make a note of what the last line of the popup says. In this case, we're assuming it is:
entity.name.class.c++
Your color scheme has a rule in it that tells it that things with a scope that matches this should appear the color that they do, so you need to adjust that color to be what you want.
To do that, you create a file in your User package, which you can locate by using Preferences > Browse Packages.... The file that you create should be the name of the color scheme you're using (just the filename, not the path if any) with an extension of sublime-color-scheme (even if the extension on your color scheme is tmTheme.
In our example, that means that we would create a file named Mariana.sublime-color-scheme in the User package.
The content of your file should look something like this:
{
// http://www.sublimetext.com/docs/3/color_schemes.html
"rules": [
{
"scope": "entity.name.class",
"foreground": "var(blue)",
},
]
}
This tells Sublime that for anything whose scope matches entity.name.class, it should use the color outlined by the variable blue instead of what your normal color scheme is doing. As soon as you save the file, you see the results appear.
We use entity.name.class here instead of entity.name.class.c++ to make the scope match anything that's considered a class in any file. Basically the more of the scope from #2 above that you use, the closer the match will be. So if you use it all, it only affects C++.
The last thing to note here is that var(blue) will only work if your color scheme defines a variable named blue. The Mariana color scheme does, which is why I used that here. Yours may not, in which case you need to specify the color a different way.
The link in the example above points to the color scheme documentation with more details, but you could use something like #0000FF in place of var(blue) to get pure blue (adjust as required, that blue is likely far too dark).