Working with the Newspaper Theme by TagDiv

I found your amazing WP theme and my client loves the design. The laptop looks great but we are having problems with the design of the hamburger menu. I am using the latest version of newspaper on our production site.

Here is the web page link to a mobile vertical and horizontal view using Iphone and Android

What we want done:
I need the custom CSS code to change the horizontal black bar to white or transparent
and the Hamburger Icon ( 3 bars ) and search icon to a black color.

Can we change black horizontal bar to white ? And white hamburger menu & search icon to white color ? What is the custom CSS code ?