Hello,

Please add this code to the Theme Settings > Custom CSS > Global:

/*sticky main menu color*/
body .whb-sticked .woodmart-navigation .item-level-0.current-menu-item>a{
color:yellow;
}
body  .whb-sticked  .woodmart-navigation .item-level-0>a{
color:orange;
}
body  .whb-sticked  .woodmart-navigation .item-level-0>a:hover{
color:yellow;
}
body  .whb-sticked  .woodmart-navigation .item-level-0.menu-item-has-children>a:after{
color:orange;
} 
body  .whb-sticked  .woodmart-navigation .item-level-0.menu-item-has-children:hover >a:after{
color:yellow;
} 
body  .whb-sticked  .woodmart-navigation .item-level-0>a .nav-link-text:after {
    background-color: yellow;
}

/*My Account*/
body  .whb-sticked  .woodmart-header-links .item-level-0>a {
    color: orange;
}
body  .whb-sticked  .woodmart-header-links .item-level-0>a:hover {
    color: yellow;
}

Change the colors as per your needs.

Best Regards