Ever wondered why the blinking words atop a Comfort cab (that says: Change Shift) are in green?

When green will only work perfectly well at night and not in broad daylight (which means you can't see no shite)?

When green has already been sealed in our closed minds to signal availability? (Similar to green = safe to walk = go for the traffic lights)

But no, a change in shift doesn't exactly mean the cabby will take you, no? Simply because that will depend on whether or not the destination you're headed to fits in nicely with the cabbie's (or it simply depends on the cabbie's mood that particular moment as he sees you flagging away like a maniac).

So why green?

God only knows how many times I've cussed under my breath at the sheer stupidity of using that colour to denote a change in shift for the cabby. IF they can use red to indicate that the cab's taken, they can jolly well use another colour to denote a change in shift, such that we don't confuse it with a (really) available cab.

And once again, why green in broad daylight?

I can see the colour, but I cannot see the WORDS. Not unless they come within 5m of me.

I think I'm doomed to tell cab stories on my blog forever.