[wp]Cambiare colore sofondo del tema scaricato

[cineocchio]

Come posso cambiare il colore grigio dello sfondo andando a modificare il codice del tema? E' corretto modificare il foglio di stile o bisogna operare altrove?
Trovate il link nella firma, l'ultimo: Cineocchio MAGAZINE

Vi riporto il codice del Foglio di Stile

*{
margin:0;
padding:0;
}

html,body{
background:#BDBDBD url(images/bodybg.jpg) repeat-x;
color:#333;
text-align:center;
} 

body{font:12px arial,helvetica,verdana,sans-serif;}

h1{
font-size:55px;
font-family:"Times New Roman", Times, serif;
font-weight:normal;
}

h2{font-size:18px;}
h3{font-size:16px;}
h4{font-size:13px;}

h5{
font-size:10px;
color: #7f7f7f;
padding-left:1px;
font-weight:normal;
margin-bottom:8px;
}

a{
color:#333;
text-decoration:none;
}

a:hover{color:#666;}

#wrapper{
margin:0px auto;
text-align:left;
width:878px;
} 

/* header */
#header{
background:url(images/headerbg.jpg) top no-repeat;
padding:5px 0;
}

#header h1 a{
width:400px;
float:left;
margin:0;
}

#header h1 a em{
font-style:normal;
color:#555;
}

#searchWrap input{vertical-align:middle;}
#searchWrap #s{
font-size:1.1em;
border:none;
padding:1px 2px;
margin-right:3px;
width:200px;
}

/* page navigation */
#pagenav{
float:left;
width:500px;
padding-top:7px;
}

ul.nav{list-style:none;}

.nav li{
float:left;
display:block;
padding:2px 10px 2px 10px;
background:url(images/pagebreak.gif) left no-repeat;
}

.nav li a{
font-size:11px;
outline:none;
color:#2F2F2F;
text-decoration:none;
display:block;
padding:5px 0 0x 5px;
text-transform:uppercase;
}

.nav li a:hover{
text-decoration:underline;
color:#484848!important;width:
}

* html .nav li a:hover{background:#FFFFFF;}

/* category navigation */
#categories{
float:left;
width:878px;
}

#categories ul{
list-style:none;
padding:1px 0 0px 0;
}

#categories li{
float:left;
display:block;
background:url(images/catbreak.gif) left no-repeat;
height: 25px;
padding-top:4px;
}

#categories li a{
color:#FFF;
display:block;
padding:2px 10px 4px 10px;
}

#categories li a:hover{color:#CCC;}

/* main content */
#mid{padding-top:4px;}
#main{
background:#FFFFFF url(images/mainbottom.jpg) bottom no-repeat;
float:left;
margin:0 10px 0 0;
width:548px;
}

#singlemain{
background:#FFFFFF url(images/smbottom.jpg) bottom no-repeat;
float:left;
margin:0 10px 0 0;
width:548px;
}

#featured{
background:url(images/maintop.jpg) top left no-repeat;
padding:5px;
}

#myGallery{
margin:4px;
font-size:18px;
}

/* sidebar */
#sidebar a{font-weight:bold;}

#sidebar{
color:#333;
float:left;
margin:0;
width:320px;
line-height:1.3em;
}

#sidebar p{color:#333;}

#blocks{
background:#FFFFFF url(images/blocktop.jpg) top no-repeat;
padding:5px 10px 0 10px;
}

#widgetblock{
background:#FFFFFF url(images/blocktop.jpg) top no-repeat;
padding:5px 5px 0 5px;
}

#tagblock{
background:#FFFFFF url(images/blocktop.jpg) top no-repeat;
padding:5px 10px 0 10px;
}

#tagblock a{
font-weight:normal;
color:#484848;
}

#tagblock a:hover{color:#7F7F7F;}

#advertblock{
background:url(images/advertblockbg.gif) top no-repeat;
height:270px;
padding:10px 0 0 10px;
}

#blocks a{
font-weight:bold;
color:#484848;
}

#blockpost{
padding:0 0 8px 0;
}

#blocks a:hover{color:#7F7F7F;}

h3.blocks{
font-size:15px;
margin-bottom: 10px;
}

h3.mainblock{
font-size:15px;
margin-bottom: 10px;
margin-left: 5px;
}

#bottomblock{
background: #BDBDBD url(images/blockbottom.jpg) top no-repeat;
height:7px;
padding:0;
margin-bottom:10px;
}

#searchWrap{
float:right;
margin-top:69px;
margin-right:2px;
}

.blocks{margin-bottom:20px;}

/* main content */
#content{
padding:10px;
}

#content p{
margin-bottom:10px;
}

#introIMG{
width:150px;
height:150px;
float:left;
margin-right:8px;
overflow:hidden;
}

#introIMG img{
border:none;
padding:4px 4px 4px 4px;
border:1px solid #FFFFFF;
}


.postMeta{
background:url(images/dot.gif) repeat-x left center;
text-transform:uppercase;
font-size:11px;
text-align:right;
margin-bottom:2px;
}

.postMeta span.date{
background:#FFF;
color:#7F7F7F;
padding:0 2px 0 4px;
}

.postMeta span.comments{
background:#FFF url(images/user.jpg) no-repeat left center;
padding-left:15px;
margin-left:2px;
}

.postMeta span.comments a,
.postMeta span.date a{color:#555;}
.post{margin:0 0 15px 0;}

.post h2{
line-height:1.2em;
}

.post h2 a{
width:100%;
display:block;
outline:none;
}

.entry h3{margin:1em 0;}

.post .entry{
line-height:1.4em;
overflow:hidden;
}

.post .entry p{margin:0;}

.post .entry p a{
background:url(images/dot.gif) repeat-x bottom left;
font-weight:bold;
}

.entry blockquote{margin:0 1.3em 0;}

.entry ul{
margin:0 1.3em 0;
list-style:none;
}

.entry li a{
color:#333;
font-weight:bold;
background:url(images/dot.gif) repeat-x bottom left;
}

.entry ul li{
background:url(images/li.gif) no-repeat 0 1px;
padding-left:18px;
margin-bottom:7px;
}

.entry ol{margin:0 1em 0 3em;}
.entry ol li{margin:0 0 7px 0;}
.entry img,.entry a img{border:none;}
.entry a:hover img{border-color:#DFDFDF;}
.entry table tr {padding: 15px 0;}
.entry table tr.alt {background: #eee;}

/* lists */
.rsslinks h3{margin-bottom:5px;}

.rsslinks p{
margin-bottom:5px;
padding-top:5px;
}

.rsslinks ul li{
background:url(images/rss.gif) no-repeat 0 3px;
color:#7F7F7F;
line-height:1.2em;
border-top:1px solid #BBB;
padding:3px 0 4px 16px;
list-style:none;
}

#widgetblock h3{margin-bottom:5px;}

#widgetblock p{
margin-bottom:5px;
padding-top:5px;
}

#widgetblock ul li{
color:#7F7F7F;
line-height:1.2em;
border-top:1px solid #BBB;
padding:3px 0 4px 0;
list-style:none;
}

/* pagination */
#pagination{
color:#7F7F7F;
font-size:11px;
text-transform:uppercase;
margin-bottom:10px;
margin-top:40px;
text-align:right;
}

#pagination p,#pagination img{vertical-align:middle;}

#pagination a img{
border:none;
margin:0 0 3px 2px;
}

/* comments */
#comments{
width:435px;
padding:12px 0 0 0;
}

#comments h3,
h3#respond{
color:#555;
margin-bottom:7px;
}

ol.commentslist{
list-style:none;
margin:5px 0 12px;

}
.commentslist li{
background:#FFF url(images/lgrey_diag.gif) repeat top left;
border:1px solid #BBB;
margin-bottom:7px;
padding:7px 0;
}

.commentslist li a{
font-weight:bold;
background:url(images/dot.gif) repeat-x bottom left;
}

.commentslist li.alt{background:#FFF;}
.commentslist li:hover{border-color:#888;}

.commentslist .comment_text{
margin:0 7px;
line-height:1.4em;
overflow:hidden;
}

.comment_text p,.comment_text ul,.comment_text ol,.comment_text blockquote{margin:1em 0;}
.comment_text ul,.comment_text ol,.comment_text blockquote{margin:0 1em;}

p.author_meta{
font-weight:bold;
text-transform:uppercase;
margin:0 0 0 7px;
}

p.post_meta{
font-size:11px;
text-transform:uppercase;
text-align:right;
margin:0 7px 0 0;
}

.commentslist li.author{
background:#333;
color:#CCC;
}

.commentslist li.author a{color:#DDD;}
.commentslist li.author a:hover{color:#FFF;}

#comments_closed{
background:#333;
color:#ccc;
padding:7px 0;
margin-top:12px;
line-height:1.5em;
}

p.nocomments{margin:0 12px 0 7px;}

p.nocomments a{
color:#ddd;
font-weight:bold;
text-decoration:underline;
}

p.nocomments a:hover{color:#FFF;}

ol.pingslist{
margin:1.5em 2em;
font-size:12px;
}

.pingslist li{
color:#7F7F7F;
margin:0 0 7px 0;
}

.pingslist li a{
font-weight:bold;
background:url(images/dot.gif) repeat-x bottom left;
}

#commentform p{margin:1em 0;}

#commentform p a{
font-weight:bold;
background:url(images/dot.gif) repeat-x bottom left;
}

#author,#email,#url,#comment{
font:1.1em arial,helvetica,verdana,sans-serif;
border:1px solid #BBB;
padding:2px;
}

#comment{width:429px;overflow:auto;}

#commentform p small{
font-size:10px;
color:#7F7F7F;
}

.commentslist code{background:transparent;}

/* footer */
#footer p{
padding-top:7px;
padding-bottom:50px;
}

#footer p a{
font-weight:bold;
color:#333;
}

/* floats */
.floatleft{
float:left;
margin:3px 7px 0 0;
}

.floatright{
float:right;
margin:3px 0 0 7px;
}

.right{float:right;}
.left{float:left;}
.clear{clear:both;}

.fix:after{
content:".";
display:block;
height:0;
clear:both;
visibility:hidden;
}

.fix{display:inline-block;} 
* html .fix{height:1%;}
.fix{display:block;}

Inoltre potete vedere come, entrando in uno specifico articolo, i widget di destra finiscano sotto all'articolo. Come mai?

[seneca]

Come posso cambiare il colore grigio dello sfondo andando a modificare il codice del tema? E' corretto modificare il foglio di stile...?

Credo sia la cosa più opportuna e corretta modicare il foglio di stile.