OK, here's my crappy PS doodle to show the safety stripe.



Keep in mind it may have more or less stripes due to my not knowing scale of the pic. I also used only a 50% brush so you could make out the details on the block, real color will be bolder. You could even adjust the width and angle of the stripes to have more or less depending on what you thought looked good.

The border stripe version proved a bit to difficult for my meager PS skillz but it would be pretty easy to mask and paint in RL. Paint the entire top black, then mask it and remove 1/4" from around the outside edge and paint that red.