Summary: This will give your message title a visual which I think looks nice. I've used an image but i ought to have used some css3 gradient and fallback on the image which you are free to do but this give you the idea to enhance it further.
Install: Upload the image in the archive to your /gradients folder and then paste the following code in your EXTRA.CSS Template.
Using on Flexille Styles: Visit this Post and use the css from that post if your using the Flexille style.
CSS3 Gradient version: You'll still have to upload the image gradient for older browser fallback. But refer to this Post for the code for the CSS3 Gradient message title enhancements
Code:
/* THREAD VIEW TITLE BAR ENHANCEMENTS */
.thread_view .titleBar {
border: 1px solid #5b0b0b;
border-radius: 5px;
background: url("@imagePath/xenforo/gradients/threadview-bg.png") repeat-x scroll bottom #891010 !important;
background-color: #891010 !important;
margin:0px auto;
text-align: center;
padding: 10px 10px;
box-shadow: 0 0 1px #ffffff inset;
}
.thread_view .titleBar #pageDescription , .thread_view .titleBar p{
color: #DCCDBB;
}
.thread_view .titleBar #pageDescription a{
color: #f7e5b6;
font-weight: bold;
}
.thread_view .titleBar h1 {
color: #f7e5b6;
text-shadow: 0 0 0 transparent, 1px 1px 0 #4B3D2D !important;
}
/* THREAD VIEW TITLE BAR ENHANCEMENTS */