Can I change my appearance at these boxes : code , quote , spoiler etc ?

I have a small question : Can I change my appearance at these boxes : code , quote , spoiler etc ? I used phbb2 forum version , and I want to change the appearance at these boxes as is the version phbb3 ! I can ?

I solved the problem : the codes css are :

Code:

.code{
font-family: Courier,Courier New,sans-serif;
font-size: 11px;
color: font color;
background: (url image) /*no-repeat center/left/right top/bottom */;
border: 1px solid }

etc .