changed button color when Open discussion is disabled

tpl/page.html

@@ -63,7 +63,7 @@
 					</div>
 					<div id="opendisc" class="button hidden">
 						<input type="checkbox" id="opendiscussion" name="opendiscussion" {if="!$OPENDISCUSSION"} disabled="disabled"{/if} />
-						<label for="opendiscussion">Open discussion</label>
+						<label for="opendiscussion" {if="!$OPENDISCUSSION"} style="color: #BBBBBB;"{/if}>Open discussion</label>
 					</div>
 				</div>
 				<div id="pasteresult" class="hidden">