A ForeFlight winds aloft question

[kicktireslightfires]

Does anyone know what the different colors for the air temperature mean? I assume it has something to do with potential icing? Just wondering if anyone knows what ForeFlight means with the temps in gray vs pink vs brown? Also, what does the ISA data mean?

Thanks in advance!

 

[PaulS]

I wasn't able to find any answers in the manual, but I suspect the color code has to do with warning about the potential for the temps to support airframe icing if the correct conditions exist. Useful for instrument flying in the clouds.

It is actually one of the places where I look if planning on flying in cold weather near clouds.

 

[Fearless Tower]

ISA is international Standard Atmosphere. Basically the ‘standard day’ temp for that altitude. The plus it minus just shows the difference from standard.