Change Menu Text (size, Bold & Colour)

Hi everyone,

I am trying to change the font, size and colour of the text fo rmy header menu. I have gone into the Customiser and it doesn’t seem to give me the option to change any of these.

Am I looking in the wrong spot. I just want the text to be bold, and double in size and my business colours.

Looking for any help that you can provide.

Thanks,
Leah