Lazarus Dark, have you followed the step 7 ? Sometimes it needs to run the step 7 a couple of times ....
And one more trick is , click on the arrow beside the "more options' button ... (shown in the image below)
And then move the slider ... set it to extra large .... the folders will change their look .... and then get back to your option, the change will be there .
If this trick didn't work, let me know ... I am to think again .