highlight an answer with different colour depending on the answer, inside a matrix

Hi @Lucas.viaud 

i cant figur out how to chance the color off the ball, but i found this. 

 

Will this works for you? 

you can do that by having this java code:
 

Qualtrics.SurveyEngine.addOnload(function() {

    // Function to highlight cells based on selected radio buttons

    function highlightCells() {

        // Reset background color of all cells

        var allCells = document.querySelectorAll('.QuestionBody td');

        allCells.forEach(function(cell) {

            cell.style.backgroundColor = ''; // Reset background color

        });

        // Highlight selected cells

        var radioButtons = document.querySelectorAll('.QuestionBody input[type="radio"]:checked');

        radioButtons.forEach(function(radioButton) {

            var cell = radioButton.parentNode;

            if (cell.tagName === 'TD') {

                var scalePoint = parseInt(radioButton.value);

                switch(scalePoint) {

                    case 1:

                        cell.style.backgroundColor = '#ffcccc'; // Red

                        break;

                    case 2:

                        cell.style.backgroundColor = '#ffebcc'; // Orange

                        break;

                    case 3:

                        cell.style.backgroundColor = '#ffffcc'; // Yellow

                        break;

                    case 4:

                        cell.style.backgroundColor = '#e5ffcc'; // Greenish

                        break;

                    case 5:

                        cell.style.backgroundColor = '#ccffcc'; // Green

                        break;

                }

            }

        });

    }

    // Execute the function to highlight cells on load

    highlightCells();

    // Listen for changes in the survey (e.g., when a radio button is clicked) and update the highlighting

    this.questionclick = function(event, element) {

        highlightCells();

    };

});

and this css code

.highlight-selected {

    background-color: #ffcccc; /* Change to your preferred highlight color */

}