Menu text colour and some buttons different colour - Woocommerce in Divi

Hi there,

I've racked my brains trying to figure a couple of inconsistencies with the colour scheme and would love any tips!

Theme accent colours have been changed on http://www.bunnwine.nextrungconsulting.com

I have the Divi menu changing height (getting smaller) from when the page loads to when a visitor scrolls down.

When viewing items in cart, standard menu view shows the cart menu text as blue. When scrolling down the page, menu height reduces and the correct accent colour displays (i.e. not blue).

Another issue I've noticed is when items in the cart are removed, a notice saying the cart is currently empty and a 'return to shop button' displays, when hovering over this button it shows as blue and apparently too small - the arrow that appears is pushed below the button.

Any suggestions would be great!!

Thanks in advance

Matt