Damn. This must be one of the most terrifying cyber attacks of all time. Like, Mr. Robot level of breach and execution.
In that show they rig the UPS batteries of server buildings to blow up, this is basically the same idea on a smaller scale.
Either that, or they compromised the manufacturer of the pagers and put small explosive devices in there. Truly legendary and insane.
The colors should be pretty much what you see there, very vivid and the contrast should be good.
However, it takes 19 seconds for a single refresh with no partial refresh available, so it has somewhat limited use cases.