How to change container color based on tag

Yes you will have to CODE all of it. I don’t think you will be able to do that without any code.

In this example you will see how to do it with → onMouseOver-event
https://russian-dima.wixsite.com/meinewebsite/repeater-video

import wixData from 'wix-data';

$w.onReady(function () {
    wixData.query("Corvid-Video-Tutorials").find()
    .then((res)=>{
        $w('#myRepeater').data=res.items
    })
 
    $w("#myRepeater").onItemReady( ($item, itemData, index) => {
        $item("#TITLE").text = itemData.title;

        $item("#CONTAINER").onMouseIn ((event) => {
            $item("#TITLE").show('float')
            $item('#BOX').style.backgroundColor = "rgb(155,155,155)";
        });

        $item("#CONTAINER").onMouseOut ((event) => {
            $item("#TITLE").hide('float')
            $item('#BOX').style.backgroundColor = "rgb(255,255,255)";
        });
    });
});

You will have to change the code by your own needs, but you already have some basic code :wink: