Fixed text color in json text area for white theme, #735

src/app/partials/edit_json.html

@@ -8,7 +8,7 @@
 	</div>
 
 	<div class="dashboard-editor-body" style="height: 500px">
-		<textarea ng-model="json" rows="20" spellcheck="false" style="width: 90%; color: white"></textarea>
+		<textarea ng-model="json" rows="20" spellcheck="false" style="width: 90%;"></textarea>
 	</div>
 
 	<div class="dashboard-editor-footer">