Function font & colors issue

[Ceci]

Hello everyone,

I am experiencing a very annoying issue related to function-name colour.

I have set a new color for function in Font & Colors tab, but when I use a struct defined by me as input, Qt doesn't recognize it as a function, thus leaving the function name color as simple text.
Here is a brief example:
Let's say you define a new type:
typedef struct{
float x;
float y;
} Coordinates;
If I want to declare a function in my header like:
float multiply(Coordinates coord);
this will appear as simple text, and not coloured as functions should be.
This doesn't happen if I use as iput function standard variable type!

Suggestions on how to fix this?
Thanks to everyone!