Color Labels JIRA Board - Tempermonkey.

colored-labels.user.js

// ==UserScript==
// @name         Color Labels JIRA Board
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  It colors the labels in JIRa.
// @author       kwiniarski97
// @match        *.atlassian.net/secure/RapidBoard.jspa*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const getHash = (name) => {
        let hash = 0;
        for (let i = 0; i < name.length; i++) {
            let chr = name.charCodeAt(i);
            hash = ((hash << 5) - hash) + chr;
            hash |= 0;
        }
        return Math.pow(hash % 1e+20, 4);
    }

    const getRandomColor = (name) => {
        const hash = getHash(name);
        const hue = hash % 360;
        const saturation = 70 + hash % (90 - 70);
        return `hsla(${hue}, ${saturation}%, 40%, 1)`;
    };

    document.addEventListener("DOMNodeInserted", () => {
        const labels = [
            ...document.querySelectorAll('span.ghx-extra-field[data-tooltip^=Labels]'),
            ...document.querySelectorAll('span.ghx-extra-field[data-tooltip^=Etykiety]')
        ];
        labels.forEach(label => {
            label.style.background = getRandomColor(label.innerText);
            label.style.color = '#fff';
            label.style.padding = "2px 4px";
            label.style.borderRadius = "4px";
        });
    });
})();