Fredacheck
Interesting point about the visual appearance of grass runways.
This never bothered me, although I can well see how it could be confusing.
My worst optical illusions were (a) the very wide runway at Manston with the hard extnsions that made it nearly wide enough to land on - really b*ggered ujp my depth perception and (b) landing at night on runways with only edge lighting - hello trench!
Also, easier to find a grass strip in winter, when surrounded by brown plouhged fileds, than in summer when they were all green
