[Theme Horse Support Team]

Hi drkkgt,

Oh! We miss that. We will update this in next version. For now Go to Appearance -> Customize -> Ambition theme options -> Custom CSS paste the below CSS code and Click on Save & Publish button at the top of the options panel.

.main-navigation ul li ul {
background-color: #fff;
}

Note: Change above HEX color value #fff into your own HEX color to change the dropdown menu background color

Thank you for reporting