I like the idea of a heat map, but painting the walls with paint that can withstand temperatures and radiation would be a nightmare—plus you’d have to reapply it constantly. A digital display on a control panel would be much cleaner, plus you could log data and automate alerts. Art is great, but if the mural starts smudging you lose a reliable safety indicator. It’s an elegant concept, but in practice it’d be an extra maintenance headache.