vs code highlighting for structs

I am using vs code and I have some troubles.

I defined my struct named 'Cod'.

and I made variable, 'Cod a'

but... the color of Cod was just.. white.....

I want to highlight the user-defined structs....

I've tried to find some way by looking for google..

but I didn't find clear way.

is there any ways to do like that?

here is image that I have!

thanks for reading what I write!!!!!!!!

enter image description here