Indeed, although "glas" has a quite different meaning in Gaelic than the English grey, as you probably know.
The obscured mountain range is known in English as the Grey Corries.
@athairbirb @Magess @fitheach I love that graphic. Sadly Irish is taught in schools over here with a fairly straight correspondence to English colours, which is a huge shame IMO. With the exception of "Rua"/"Dearg", but even then I was only told that "Rua is for hair, dearg for anything else" which is just false.
My kids are still being taught the "glas for green grass, gorm for blue skies or sea, liath for pencil-grey", which is a parched version of the language.
@seachaint much the same in GME. It's quite an old 'problem' too, I recall being taught English colours with Gaelic words (if that makes sense) and not the nuances of Gàidhlig colouration.
I didn't get to take art 'anns a' Ghàidhlig' in secondary school, so missed out on learning about it there too. Something I think should be used in modern art classes in Scotland and Ireland (and areas with interest)