Bom, eu tenho uma sugestão não é tão últio assim mais é bom para combinar com a visualização do fórum é por um chatbox personalisado então eu trouxe o código HTML e uma imagem demostrando espero que gostem, e que cada um pense indivudual em relação a este assunto. Código
Código:
#chatbox_footer .right
div[class][id]{height:20px;margin-right:0;border:0;border-right:1px
solid
#CFCFCF;background-color:#f5f5f5;padding:7px;cursor:default}#chatbox_footer
.right div[class][id]:first-child{border-left:1px solid
#CFCFCF}#chatbox_main_options span,#chatbox_main_options
label,#chatbox_main_options
a{height:34px;margin-right:0;border:0;border-right:1px solid
#CFCFCF;background-color:#f5f5f5;padding:7px;color:#000;padding-top:14px}#chatbox_main_options{position:absolute;bottom:0;left:0;z-index:1;color:#818181!important;height:34px;font-size:0;margin:0;margin-bottom:-25px}#chatbox_main_options
li
a[onclick*="ajax_refresh_chatbox"]{font-size:0;background:url(http://www.arecontvision.com/cool_captcha/icon-reload.gif)
no-repeat center
#f5f5f5;padding-top:25px;padding-bottom:9px;padding-right:31px;border-top:1px
solid #CFCFCF;cursor:default}#chatbox_main_options
a[href="/chatbox/index.forum?archives=1"],#chatbox_main_options
a[href="/chatbox/index.forum?archives"]{font-size:0;background:url(http://www.dreamtemplate.com/dreamcodes/web_icons/gray-archive-icon.png)
no-repeat center
whiteSmoke;padding-top:25px;padding-bottom:9px;padding-right:31px;border-top:1px
solid #CFCFCF;cursor:default}#chatbox_main_options
a[href="/chatbox/index.forum?archives"]{background-color:#E6E6E6}#chatbox_main_options
li
a[onclick="CB_disconnect();"]{border-right:0;padding:0}#chatbox_main_options
li a[onclick="CB_disconnect();"]
span{font-size:0;background:url(http://i.imgur.com/xXA8w.gif) no-repeat
50% 50%
#f5f5f5;padding-top:25px;padding-bottom:9px;padding-right:31px;border-top:1px
solid #CFCFCF;cursor:default}#chatbox_footer{padding:0;background:url()
#f5f5f5;border-top:1px solid
#CFCFCF;display:block!important;border-radius:0}#chatbox_messenger_form
.right {padding:0;font-size:0}#chatbox_messenger_form .right
input#message{height:34px;font-weight:normal;background-color:white;background-image:url();border:0;height:34px;margin-bottom:0;font-size:16px;cursor:default;padding:0
0 0 5px;outline:none;width:304px}#chatbox_messenger_form .right
input[name="submit_button"]{height:33px;font-size:15px;border:0;background-color:transparent;padding-left:10px;padding-right:11px;margin-left:-4px;cursor:default;font-weight:normal}#chatbox_messenger_form
.right
img[src="http://2img.net/i/fa/subsilver/wysiwyg/menupop.gif"],#chatbox_members
h4.member-title,#chatbox_main_options
li#chatbox_option_autorefresh,#chatbox p.clearfix
span.date-and-time,#chatbox p.clearfix:hover
span.date-and-time{display:none}#chatbox_header{height:0;font-size:0}#chatbox{top:32px;left:0}#chatbox
p.clearfix:first-child{padding-top:8px}#chatbox_members{position:absolute;z-index:1;height:31px;left:0;top:0;width:100%;background:url(http://www.addthis.com/forum/styles/addthis2/theme/images/whosonline.gif)
8px -3px no-repeat white;overflow-y:hidden;border-bottom:1px solid
#CFCFCF}#chatbox_members
li{display:inline;margin-right:0}#chatbox_members
a:last-child:after{content:', '}#chatbox_members li:last-child
a:last-child:after{content:''}#chatbox_members
ul{padding-top:8px;font-size:12px;margin:0;overflow-y:hidden;overflow-x:auto;margin-left:46px;padding-right:8px;padding-bottom:0;white-space:nowrap;height:23px;max-width:none}#chatbox_footer
#chatbox_messenger_form .right .fontbutton:hover,#chatbox_header
#chatbox_main_options.chatbox-options a:hover,#chatbox_header
#chatbox_main_options.chatbox-options span:hover,#chatbox_messenger_form
.right
input[name="submit_button"]:hover{background-color:#CFCFCF!important}#chatbox_footer
#chatbox_messenger_form .right
.fontbutton.fontbutton_selected{background-color:#E6E6E6}#chatbox
p.clearfix{background-color:#EDEFF4;margin:0;padding:5px;padding-left:0;margin-left:7px;margin-right:7px}#chatbox
p.clearfix span.user,#chatbox p.clearfix .msg,#chatbox_main_options
li{font-size:0}#chatbox p.clearfix .msg,#chatbox p.clearfix span.user
*{font-family:Verdana;font-size:12px}.user
a[href*="/u"]{margin-right:8px}.user span:first-child
strong{margin-right:4px}.user span:last-child
strong{margin-right:0}a[onclick*="ajax_refresh_chatbox"]:hover{background:url(http://www.arecontvision.com/cool_captcha/icon-reload.gif)
50% 50% no-repeat #000!important}#chatbox
p.clearfix[class^="chatbox_row_1"]
span[style="font-style:italic"]{font-size:15px;font-style:normal!important;margin-left:-66px;background-color:#EDEFF4}#chatbox
p.chatbox_row_1.clearfix:first-child
span[style="font-style:italic"]:last-child{font-size:0px}#chatbox
p.chatbox_row_1.clearfix:first-child
span[title]:first-child{visibility:hidden}#chatbox
p.chatbox_row_1.clearfix:first-child
span[style="font-style:italic"]:last-child:before{margin-left:7px;background:url(http://i.imgur.com/xXA8w.gif)
top left
no-repeat;background-size:20px;padding-left:22px;content:'Entre para
conversar';font-size:15px}#chatbox_contextmenu{z-index:1}#chatbox_messenger_form{margin-top:0px}.user-msg{display:inline-block;padding-left:38px;background:url(http://i.imgur.com/BMdww.gif)
no-repeat top left;background-size:32px 32px;min-height:32px}.user-msg
.msg{display:block}.user-msg .msg
span{border-image-width:0px;border:0px;border-image-source:url(http://i.imgur.com/BMdww.gif)}
Visualização Cores e imagens 
Cores 
Folhas de estilos CSS.Imagem
