green, grey, or blue screen on your nes?

[Niku-Sama]

kind of an odd question but I was getting some extra systems ready to sell off locally and while I was testing them I noticed that some of them blink different colors when there isnt a game in there when you turn the system on.
I usually get ones that blink grey, but this batch had a dark green and I have seen blues before

I have one other that is a light blue/green color but its like that all the time so its coming apart again...

edit:
ok I thought the light blue/green system was toast but it seems that's the color this one shows when it sees no game...that's a new one on me.
on the plus side I don't even have to push the game down for it to come on any more