This can be an excellent way to give old devices an occasional modern use: to create interesting lighting effects in spaces, particuarly if your vintage device is an industrial design icon. Obviously, this shouldn't be used as a continuous light due to relatively high watt/lumen energy consumption. Additonally, the brightness &accuracy of the colour delivered is completely dependant upon the accuracy of your device screen, and how it's various settings are configured (e.g. colour temperature, brightness, contrast etc.)
In the near term, I intend releasing a standalone screensaver for Mac OS X (Universal Binary) &Windows 98+, as soon as I figure out how to cobble together snippets of code from Stack Overflow. This will be accessible on GitHub
Longer term, it is my ambition to integrate some luminaire class code from one of the IOT community suites (e.g. Hue or HomeKit) to enable vintage devices have their screen output be controlled in tandem with contemporary IOT devices.
I also wish to include some code (on this webpage) to output the ideal light colour based on the time of day (a la Nightshift or equivalent Circadian Rhythm methodology). I wish to investigate some means of reporting back system parameters to the user such as current brightness settings etc, depending upon what is avaiable via the web browser. And include some way of the user choosing their own hue, saturation &luminosity.
This webpage has been principally adapted from code by Nisarg Shah on Stack Overflow &Brandon Mathis on GitHub . The website is accessible using HTTP rather than HTTPS, in order to permit older web connected devices access it (as often they do not recognise modern SSL certificates etc.). Whilst not the case yet, the intention is that all code required will be both compatible and lightweight enough to work on 1990s era web browsers.