You can try achieving this by adding the following CSS code in the Custom CSS option of your theme on the below path.
Admin Area -> Appearance -> Customize -> Shapely Options -> Other
body.woocommerce-account .woocommerce-MyAccount-navigation li {
list-style: none;
}
body.woocommerce-account .woocommerce-MyAccount-navigation ul {
margin-left: 0;
}
body.woocommerce-account .woocommerce-MyAccount-navigation a:hover {
text-decoration: none;
color: #000;
}
Please change the color value in the above code to whatever you want to use by referring the following pages.
http://www.w3schools.com/html/html_colors.asp
http://www.w3schools.com/html/html_colorvalues.asp
http://www.w3schools.com/tags/ref_colorpicker.asp