Changer la couleur du fond (Créer un compte)

Bonjour,
je ne trouve pas ce qu’il faut changer dans le code du fichier « style.css » du theme « Almost Spring », pour changer la couleur du fond (de rose pale > blanc) :

/*
Theme Name: Almost Spring
Theme URI: http://beccary.com/goodies/wordpress-themes/
Description: A two column theme. Light and simple with greens and oranges.
Version: 1.3
Author: Becca Wei
Author URI: http://beccary.com
*/

/* Basics and Typography */

body {
margin: 0;
padding: 0;
background: #E8E8CE url(images/bg.gif) repeat-x fixed;
font-size: 78%;
font-family: « Lucida Grande », « Lucida Sans Unicode », Verdana, Arial, sans-serif;
color: #333;
text-align: center;
}
p {
font-size: 1em;
line-height: 1.5em;
margin: 1.2em 0;
}
ol, ul {
font-size: 1em;
line-height: 1.5em;
margin: 1.2em 0 1.2em 2em;
padding: 0;
}
h1, h2, h3, h4, h5, h6 {
margin: 1.2em 0;
font-family: « Lucida Grande », Tahoma, Arial, sans-serif;
color: #9BBB38;
}
h1, h2 {
font-size: 1.4em;
}
h3 {
font-size: 1.3em;
}
h4 {
font-size: 1.2em;
}
a {
text-decoration: none;
}
a:link {
color: #E58712;
}
a:visited {
color: #B96F17;
}
a:hover, a:active {
color: #9BBB38;
}
input, textarea, select {
border: 1px solid #C1C0B5;
background-color: #FAFAF0;
color: #333;
font-size: 1em;
font-family: « Lucida Sans Unicode », Tahoma, Arial, sans-serif;
}
blockquote {
margin: 0 20px;
padding: 0 20px;
border-left: 4px solid #E8E7D0;
font-size: 0.9em;
}
code {
font-family: monospace;
color: #666;
}
form, img {
margin: 0;
padding: 0;
border: 0;
}
.small {
font-size: 0.9em;
color: #999;
}

/* Layout */

#wrapper {
margin: 0 auto;
width: 750px;
background-color: #FFF;
text-align: left;
}
#header {
padding: 30px 0 0 0;
background-color: #F5F5E7;
border-bottom: 10px solid #9BBB38;
}
/* Header Styles */
#header h1 {
margin: 0;
font-size: 1.8em;
}
#header h1 a {
text-decoration: none;
color: #80904F;
}
#content {
float: left;
margin: 0 0 0 20px;
width: 500px;
display: inline; /* IE double margin bug fix */
}
#sidebar {
float: left;
margin: 0 20px 0 20px;
padding: 1.8em 0 0 0;
width: 190px;
font-size: 0.9em;
display: inline; /* IE double margin bug fix */
}
* html #content, * html #sidebar {
overflow: hidden; /* For IE */
}
#footer {
clear: both;
font-size: 0.9em;
text-align: right;
}
/* Footer Styles */
#footer p {
margin: 0;
padding: 10px 0 20px 0;
background-color: #E8E8CE;
border-top: 10px solid #9BBB38;
font-size: 0.9em;
text-align: right;
}

/* Sidebar Styles */

#sidebar h2 {
display: inline;
margin: 1.2em 0 0.6em 0;
padding: 0 10px 0 0;
background: url(images/arrow.gif) no-repeat center right;
font-size: 1.1em;
}
#sidebar h2 a {
color: #9BBB38;
}
#sidebar h2 a:hover {
color: #E58712;
}
#sidebar ul {
margin: 0;
padding: 0;
list-style-type: none;
}
#sidebar ul li {
}
#sidebar ul ul {
margin: 1.2em 0;
border-top: 1px solid #E8E7D0;
background-color: #FAFAF0;
}
#sidebar ul ul li {
padding: 0 0 0 10px;
border-bottom: 1px solid #E8E7D0;
}
#sidebar ul ul li a {
display: block;
margin: 0 0 0 -10px;
padding: 0.1em 10px;
width: 190px;
voice-family: «  »} » »;
voice-family: inherit;
width: 170px;
}
html>body #sidebar ul ul li a {
width: 170px;
}
#sidebar ul ul li a:hover {
background-color: #FFF;
}
/* Nested lists? */
#sidebar ul ul ul {
margin: 0;
border: none;
}
#sidebar ul ul ul li {
margin: 0 0 0 -10px;
padding: 0 0 0 25px;
border-bottom: none;
border-top: 1px solid #E8E7D0;
}
#sidebar ul ul ul li a {
margin: 0 0 0 -25px;
padding: 0.1em 10px 0.1em 25px;
width: 190px;
voice-family: «  »} » »;
voice-family: inherit;
width: 155px;
}
html>body #sidebar ul ul ul li a {
width: 155px;
}
/* Calendar */
#wp-calendar {
margin: 0 0 1.2em 0;
width: 190px;
border: 1px solid #E8E7D0;
background: #FAFAF0;
line-height: 1.2em;
text-align: center;
voice-family: «  »} » »;
voice-family: inherit;
width: 188px;
}
html>body #wp-calendar {
width: 188px;
}
#wp-calendar caption {
margin: 1.2em 0 0 0;
padding: 0.4em 0;
background: #9BBB38;
color: #FFF;
font-weight: bold;
}
#wp-calendar td {
border: 0;
border-collapse: collapse;
background: #FFF;
}
#wp-calendar td a {
display: block;
width: 100%;
}
#wp-calendar td.pad {
background: transparent;
}
#wp-calendar td#next, #wp-calendar td#prev {
padding: 0.1em 2px;
background: transparent;
}
#wp-calendar td#next a, #wp-calendar td#prev a {
display: inline;
}
#wp-calendar td#next {
text-align: right;
}
#wp-calendar td#prev {
text-align: left;
}

/* Blog */

.post {
}
.posttitle {
margin-bottom: 0;
width: 100%;
color: #FFF;
overflow: auto;
/* Width and overflow to clear ‘.posttitle a’ */
}
.posttitle a {
float: left;
padding: 0 10px;
background: #9BBB38 url(images/posttitle.gif) no-repeat top right;
}
.posttitle a:link, .posttitle a:visited {
color: #FFF;
}
.posttitle a:hover, .posttitle a:active {
background: #E8E7D0 url(images/posttitle.gif) no-repeat 100% -91px;
color: #80904F;
}
.postmeta {
margin-top: 0;
padding-top: 1px;
background: url(images/postmeta.gif) no-repeat top left;
font-size: 0.9em;
color: #999;
}
.postentry {
}
.permalink {
margin: 0 1.8em 0 0;
padding: 0 0 0 14px;
background: url(images/permalink.gif) no-repeat center left;
}
.commentslink {
padding: 0 0 0 17px;
background: url(images/commentslink.gif) no-repeat center left;
}

/* Comments */

#commentlist {
margin: 1.2em 0;
padding: 0;
border-bottom: 1px solid #E8E7D0;
list-style-type: none;
}
#commentlist li {
border-top: 1px solid #E8E7D0;
padding: 1px 20px;
background-color: #FFF;
}
.alt {
background-color: #FAFAF0 !important;
}
.commenttitle {
margin-bottom: 0;
font-size: 1.1em;
}
.commentmeta {
margin-top: 0;
font-size: 0.9em;
color: #999;
}
#comment {
width: 98%;
}

/* Widgets and Etc */

.widget_search div {
margin: 1.2em 0;
}
#sidebar #s {
margin-bottom: 2px;
width: 180px;
}

Quelqu’un aurait il une idée ?

Merci par avance.

Luigi