Syntax highlighting for field, variable and new expression types

[ivanz]

Effectively the result is this:

and in fact matches the TypeScript highlighting:

Thoughts?

Closes #687
Relates to #674

Before

After

[ivanz]

I think the blue makes it a bit too colourful actually. Here is a screenshot with the variable/field name highlighting disabled (it's still enabled in the code of this pull request). I think I am personally leaning to remove the variable name blue colour, because it's only highlighting the definition of the variable and not the usages, so it looks a bit weird?

[ivanz]

Closing this, because it hit me that I am not fully happy with this and that it makes the code less readable without the semantic bit to be able to highlight types and variable usages as well. 😞