[Medina]

If you want this modification to work also with the sub-forums.
Please, follow the next instructions.

Go Into Admincp --> Styles and Templates --> Manage Templates;
Edit forumhome_forumbit_level1_post

FIND:

{vb:stylevar imgdir_statusicon}/{vb:raw forum.imageprefix}forum_{vb:raw forum.statusicon}-48.png" class="forumicon" id="forum_statusicon_{vb:raw forum.forumid}" alt="" />

REPLACE WITH:

            <vb:if condition="$forum['iconlocation']">
                <img src="{vb:raw forum.iconlocation}" class="forumicon" alt="{vb:raw forum.title}" style="opacity: <vb:if condition="$forum['statusicon'] == 'old'">0.5<vb:else />1</vb:if>;" id="forum_statusicon_{vb:raw forum.forumid}" />
            <vb:else />
                <img src="{vb:stylevar imgdir_statusicon}/{vb:raw forum.imageprefix}forum_{vb:raw forum.statusicon}-48.png" class="forumicon" id="forum_statusicon_{vb:raw forum.forumid}" alt="" />
            </vb:if>