The needle pointer for the rev counter as shown on pullng power last night changes from blue to pink to red at the intended red line, is this a first in a production car?
Colleague of mine remembers a childhood where they encouraged "Dad" to go faster so they could see the colour change on one of those barrel speedo bars...went from Green under 30 to yellow/orange and then above 70 it went red....
Its a nice touch as long as it doesn't do a TVR and stop working randomly then cost a fortune to fix Its expensive making proper automotive quality electronics which are vibration and temperature resistant to the correct levels.
The fact that it uses LEDs rather than LCDs or bulbs will help. LEDs are pretty much 100% resisitant to shock and vibration. LCDs, given their liquid properties, are not.
It will be fine. The gauge illumination/needle colour changing with increasing/decreasing readings has been available for quite a while on JDM aftermarket gauges, IIRC GReddy and HKS do them.
It changes from blue to pink at 4100rpm and pink to red at 6100rpm(happy to be corrected), and they had it rigged up today so the needle kept going up and down all day doing it's trick.
Its expensive making proper automotive quality electronics which are vibration and temperature resistant to the correct levels. 