Use this custom css for menu color. Insert the color which you want to set
.sp-megamenu-parent>li>a, .sp-megamenu-parent>li>span, .sp-megamenu-parent .sp-dropdown li.sp-menu-item>a{
color: #e02b8fdb !important;
}
Add this css code inside the custom.css file.
Note: Path towards custom CSS:
Extensions>Templates>Styles>
Click on your current default template name then choose Template Options.
Then find custom CSS within the custom code.
https://prnt.sc/pu705g
https://prnt.sc/pu70zn
In Extensions>Template> Template Options > Custom Code > Custom CSS please add this
And for language switcher please create a new forum post
Thanks