The things we don’t notice

It’s weird.

I have been working in this office for as long as 2go-Box has been here. That’s been since February or something. And in all that time, I never noticed, until just now, that the stripes on the wallpaper alternate.

There’s an antique-looking beige “canvas” of sorts, and then there are these bold strips consisting of five stripes. The outermost stripes are red with a squarish curled Egyptian pattern in gold along them. The three inner stripes are alternately green and blue. I just now noticed that the pattern of green and blue alternates from bold strip to bold strip; first it’s green-blue-green, and then it’s blue-green-blue.

What state of mind am I usually in, that I never noticed this before, and what state of mind am I in now that let me notice it?