Change colour of mobile nav icon

The website i’m currently making is just about finished but the opening screen has a white background image. This makes is so the 3 dash nav icon on the mobile version of the site is invisible. I’ve looked under the “Mobile navigation” section of the style.css to find out where it’s colour hex is but with no luck. Could you point out where in the style.css i should look to change it’s colour?

Thank you, i’m loving this theme!

Oh hah, I found it! Just have to be suborn and keep trying sometimes.