Change color and remove underline from Menu block

Hello everyone,

Can anyone please help me with the code to change the colour of link on my menu blocks and remove the underline when active?

This is what I want to achieve.

Site: https://ptphotography.squarespace.com/prints-frames

Thank you in advance,
K

Here you go, copy to Settings->Design->Custom Css

.menu-block .menu-selector label.menu-select-labels--active {
  text-decoration: none;
  color: red;
}

This is brilliant! Thank you so much for this. I didn't think it was possible at first, thank goodness I asked. 

Take care, K