Mam tutaj taki skrypt, ale że zmienia kolor tła strony a chciał bym go zmodyfikować abym mogł wpisywać tekst w polu input kolorami oraz zapamietalo kolor wybrany

[HTML] pobierz, plaintext 
<!--//
var global_name = 'color';
//
function getColor(sel, cookie_name) {
    var cookie_value = getCookie(cookie_name);
    if (!cookie_value) cookie_value = 'white';
    document.body.style.backgroundColor = cookie_value;
    var opt = sel.options;
    var x, len = sel.length;
    for (x=0; x<len; x++) {
        if (opt[x].value == cookie_value) {
            opt[x].selected = true;
            break;
        }
    }
    return true;
}
getColor(document.forms[0].color_select, global_name);
//
function setColor(sel, cookie_name) {
    var opt = sel.options[sel.selectedIndex].value;
    var oneDay = 24 * 60 * 60 * 1000;
    var oneYear = 365 * oneDay;
    var expDate = new Date();
    expDate.setTime(expDate.getTime() + oneYear);
    setCookie(cookie_name, opt, expDate);
    return getColor(sel, cookie_name);
}
// ---------------------------------------- //
function getCookie(name) {
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
      return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break;
  }
  return null;
}
function getCookieVal(offset) {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
    endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
}
function setCookie(name, value) {
  var argv = setCookie.arguments;
  var argc = setCookie.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  var path = (argc > 3) ? argv[3] : null;
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;
  document.cookie = name + "=" + escape (value) + 
     ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
     ((path == null) ? "" : ("; path=" + path)) +  
     ((domain == null) ? "" : ("; domain=" + domain)) +    
     ((secure == true) ? "; secure" : "");
}
function delCookie(name) {
  exp = new Date();
  exp.setTime(exp.getTime() - (24*60*60*1000));
  var cval = getCookie(name);
  cval = (cval == null) ? "" : cval;
  document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}
//-->
[HTML] pobierz, plaintext 

A co już udało Ci się w tej kwestii zrobić?

Po pierwsze to j/w. A po drugie to zakomentowane raczej działać nie będzie ;-)