:rainbow: Improve look on color screen
Context
It's a shame to stick to a gray scale view on Inkpad color devices.
Analysis
Original weather icons aren't grayscale; See https://openweathermap.org/weather-conditions#How-to-get-icon-URL. One could replace current icons with the originals and check on color (and also grayscale!) devices the rendering.
See icons/README.md for icons sources, transformation, etc.
Icons proposed by bugs631 on MobileRead forum.
But pbres error with the proposed icons; It works after they're converted to use a color map (conversion done using Gimp) and then icons look wrong on B&W display. One should detect the device capability and convert to level of gray dynamically...
One should also anticipate the impact on dark screen mode and power off logo.
Contribution welcome.
New proposal: https://www.mobileread.com/forums/showpost.php?p=4469541&postcount=14