Theme configuration

const theme = {
    font: "Helvetica Neue LT Pro",
    backgroundColor: "#FFFFFF",
    colorTheme: {
        type: "ppt",
        text1: "#000000",
        background1: "#666666",
        text2: "#ffffff",
        background2: "#666666",
        accent1: "#4472C4",
        accent2: "#ED7D31",
        accent3: "#A5A5A5",
        accent4: "#FFC000",
        accent5: "#5B9BD5",
        accent6: "#70AD47"
    }
};

editor.plugins.get('Grunt').setTheme(modelElement, theme);

editor.model.document.on('change:data', () => {
    const differ = editor.model.document.differ;
    const changes = differ.getChanges();

    for (const change of changes) {
        if (change.type === 'insert') {
            const node = change.position.nodeAfter;

            if (!node) continue;

            if (node.is('element', 'grunt')) {
                editor.plugins.get('Grunt').setTheme(node, theme);
            }
        }
    }
});