I\'m using JavaScript\'s prompt()
function.
var favorite = prompt(\'What is your favorite color?\', \'RED\');
I\'m using IE 7
Not exactly what's being asked, but the only way I found to give the prompt box some formatting...
Using this answer, this answer and these HTML symbols, one can get creative and achieve this:
Demonstration:
var balls = '\u25CD'.repeat(24),
blue = '\u27BF',
red = '\u274C',
yellow = '\u2728',
green = '\u2705',
arrow = '\u25B8';
window.prompt(balls+' \u25C9 '+balls+'\rWhat is your favorite color?\r\t'+arrow+' B\u0332lue '+blue+'\r\t'+arrow+' R\u0332ed '+red+'\r\t'+arrow+' Y\u0332ellow '+yellow+'\r\t'+arrow+' G\u0332reen '+green);