This will make the blog's owner comments looks different from the visitors comments.
Step 1
Login to your Blogger account and navigate to Design section. Then go to Edit Html subtab.
Step 2
Check the Expand Widget Templates box
Step 3
Copy this script and put it before ]]></b:skin> or copy to your CSS area.
.author-comments {
background: #ffffff;
border: 2px solid #666666;
padding: 5px;
}
Step 4
Then find this code
<dl id='comments-block'>
<b:loop values='data:post.comments' var='comment'>
<dt class='comment-author' expr:id='"comment-" + data:comment.id'>
<b:if cond='data:comment.authorUrl'>
<data:comment.author/>
<b:else/>
<data:comment.author/>
</b:if>
said...
</dt>
<b:if cond='data:comment.author == data:post.author'>
<dd class='author-comments'>
<p><data:comment.body/></p>
</dd>
<b:else/>
<dd class='comment-body'>
<b:if cond='data:comment.isDeleted'>
<span class='deleted-comment'><data:comment.body/></span>
<b:else/>
<p><data:comment.body/></p>
</b:if>
</dd>
</b:if>
<dd class='comment-footer'>
<span class='comment-timestamp'>
<a expr:href='"#comment-" + data:
comment.id' title='comment permalink'>
<data:comment.timestamp/>
<b:include data='comment' name='commentDeleteIcon'/>
</span>
</dd>
</b:loop>
</dl>
Step 5
The bold text is the code that you have to add to your script. The position must be right.
Step 6
Save your template