You can add/change css style or add new attributes to current style at runtime, in asp.net code behind.
Lets say you have:
<a ID=”linktemp” style=”text-decoration:underline” class=”verdana12bluebold” runat=”server” >Download</a>
Now if we want to change its class dynamically then in code behind we have to do:
if we want to change its text-decoration under style then,
in the similar you can add new styles, change visible option to true/false,
Bored with your regular UI of your flex application, now make its look n feel better with ready themes.. there are number of themes available, just download them, add images, css, etc, to your flex application and here you go..your application is ready with beautiful themes.. you can also customize them according to your requirements..