Hamburger menu color change when open

Newby here — having a bit of trouble animating color change of menu line when hamburger menus is trigged. Can see there’s a few ways over going about this, So any suggestions would be amazing !

Ideally I want nav lines to be black when menu is closed and white when open.
:thinking:
Link: https://preview.webflow.com/preview/joan-test-435d1d?utm_medium=preview_link&utm_source=designer&utm_content=joan-test-435d1d&preview=4f961d9d97435359308bc868fb84efc9&mode=preview
Thanks!


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