------- ANTES FAÇA BACKUP  ------------ 

1 - Ente no BLOGGER, vai em modelo e  Editar HTML;
2 - Clique no codigo e digite "CTRF + F" para procurar qualquer código;
3 - Procure por      ]]></b:skin> e aperte ENTER;
4 - Acima de  ]]></b:skin> cole o seguinte código:

div.avatar-image-container { position: absolute !important; min-width: 60px; min-height: 60px; border: 5px solid palevioletred; /*cor da borda da imagem*/ -moz-border-radius: 60px; -webkit-border-radius: 60px; border-radius: 60px 60px 60px 60px; padding: 0pt !important; box-shadow: 0pt 0pt 3px #cccccc; margin-left: -10px !important; margin-top: -12pt !important; background: palevioletred; /*Cor do fundo da imagem*/ } div.avatar-image-container img { min-width: 60px; min-height: 60px; -moz-border-radius: 60px; -webkit-border-radius: 60px; border-radius: 60px; } #comments .comment-author { padding-top: 1.5em; font-size: 12px; text-align: left; border-top: 1px solid; background-position: 0 1.5em; } #comments .comment-author:first-child { text-align: left; padding-top: 0px; border-top: none; } .comments .comments-content .comment:last-child { padding: 2px; border-bottom: 3px solid palevioletred; /*Cor da borda inferior do último comentário*/ } .comments .comments-content .comment:first-child { padding: 2px; } .avatar-image-container { margin: 0.2em 0pt 0pt; } #comments h4 { text-align: center; display: block; font-weight:bold; } .comments { font-style: normal !important; font-size: 12px !important; /*Tamanho da fonte dos comentários*/ font-family: arial !important; /*Fonte dos comentários*/ color: #482531; */Cor da fonte dos comentários*/ } #commnet-form, .comment-form{ margin-bottom: 40px; } #comments-block { text-align: left; margin:10px auto; line-height:1.6em; } #comments-block .comment-author { text-align: left; margin:5px auto; padding:5px auto; } .blog-author-comment { margin:5px auto; } .blog-author-comment p{ margin:5px auto; } #comments-block .comment-body { text-align: left; margin:.35em 0 0 auto; line-height: normal; } #comments-block .comment-footer { text-align: left; margin:-.25em 0 2em auto; line-height: 1.4em; margin:10px auto; text-transform:uppercase; letter-spacing:.1em; } #comments-block .comment-body p { text-align: left; margin:10px auto; } .deleted-comment { font-style:italic; color:gray; } #comments dl dd { padding: 0; margin: 0; line-height: 110%; text-align: left; } .comment { background: #F6DFE7; /*Cor de fundo dos comentários*/ color: #482531; /*Cor da fonte dos comentários, coloque igual a anterior*/ font-size: 12px; /*Tamanho da fonte dos comentários, coloque igual ao anterior*/ border: 3px solid palevioletred; /*Cor da borda dos comentários*/ -moz-border-radius: 20px 0px 20px 0px; -webkit-border-radius: 20px 0px 20px 0px; border-radius: 20px 0px 20px 0px; padding-right:5px;-moz-box-shadow: 3px 3px 3px #cccccc; -webkit-box-shadow: 3px 3px 3px #cccccc; box-shadow: 3px 3px 3px #cccccc; } .comment a { color: deeppink; /*Cor do link*/ } .comment a:hover { color: yellowgreen; /*Cor do link quando passamos o mouse*/ } .comment-content { margin-right: 5px; } .comments .comments-content .comment-header, .comments .comments-content .comment-content { margin: 0pt 8pt 8px; } .comments .comments-content { margin-bottom: -50px; } #commentpaging { float:right; } #commentpaging a { margin-right:5px; } .comments .comments-content .comment-header, .comments .comments-content .comment-content { 0pt 0pt 8px; } .comments .comments-content .user a, .comments .comments-content .user { border: 0pt none; color: white !important; /*Cor do nome de quem comentou*/ text-shadow: 0pt 1px rgb(153, 153, 153); font-family: Coming Soon !important; /*Fonte do nome de quem comentou*/ font-size: 14px; /*Tamanho do nome de quem comentou*/ text-decoration: none; background: palevioletred; /*Cor do fundo do nome de quem comentou*/ padding: 5px 12px; margin-left: -12px; border-bottom-right-radius: 10px; -moz-border-radius: 0px 0px 10px 0px; -webkit-border-radius: 0px 0px 10px 0px; } .comments .comment-block { position: static !important; background: transparent; margin-left: 23px; padding: 0pt 0pt 0pt 30px; } .comments .comment .comment-actions a, .comments .continue a { font-size: 11px !important; color: white !important; /*Cor da fonte dos botões responder e excluir*/ padding: 3px 6px; border: 0pt none !important; line-height: 30px; margin: 3px; border-radius: 0.5em 0.5em 0.5em 0.5em; -moz-border-radius: 0.5em 0.5em 0.5em 0.5em; -webkit-border-radius: 0.5em 0.5em 0.5em 0.5em; background: palevioletred; /*Cor de fundo dos botões responder e excluir*/ font-weight: 800; box-shadow: 0pt 1px 2px rgb(102, 102, 102) inset; } .comments .continue a { color: #666666 !important; /*Cor da fonte do botão responder da direita*/ float: right; padding: 0px 4px !important; height: 23px; line-height: 23px !important; margin-top: -53px !important; text-shadow: 0pt 0pt !important; background: white !important; /*Cor de fundo do botão responder da direita*/ margin-right: 10px; } .comments .comments-content .comment { margin-bottom:20px; padding-bottom:10px; } .comments .comments-content .icon.blog-author { display: none !important; } .comments .comments-content .datetime { display: none; /*Apaga a data*/ } .comments .thread-toggle { margin-bottom: 15px; } span.icon.user { display: none !important; }

Vou postar de outras formas.... caso alguém não consiga diga nos coméntarios...
Bjos .