I was raised with the concept that somehow green veges are especially important in the diet.
If I was to regularly consume veges of other colours instead (such as purple cabbage, carrots, white cauliflower) and not green veges, would it impact my health?
I'm not aware of any compounds commonly giving a green colour other than chlorophyll, so perhaps the presence of chlorophyll is the key difference between green and non-green veges.
This information suggests there are substantial benefits to consuming chlorophyll, however it certainly doesn't go as far as comparing the benefits of eating green veges against eating other veges. It may be that other colours of veges contain just as much of beneficial compounds as green veges.
Many other articles claiming you should "eat your greens", such as this one, seem to largely interpret "greens" as veges of any colour (as they focus mainly on the benefits that you can get from eating veges of any colour). However, I believe a very common interpretation of "eat your greens" is a literal interpretation, when perhaps this shouldn't be the case.
Further references to support that "Eat Your Greens" is a notable claim to question: