Could you provide more details?
This does sound like something that would be good for monitoring automated scripts and processes that now send emails where I work. Could you expand on how this system differs from Nagios and related tools? Nagios uses (perhaps completely custom) scripts and tools to provide a status, and am pretty sure has the ability to store historical data in MySQL. It's default display also looks similar to your display board, with indicators of green/yellow/red. Understand, I'm not trying to be one of those people saying "why did you do this when you could have used X", I'm trying to think how your system differs, so that if I can get time to do an implementation at my own work, I don't end up recreating Nagios (badly).