Light and dark.
in reply to When I count, I think of numbers as...
Zero through ten are fairly bright. Eleven through twenty are a bit dimmer, but the numbers brighten up again until thirty. Then it's a gradual dimming until about one hundred, after which it's all a murky blanket.
Other numbers tend to get categorized by their primary components. So eleven thousand, for example, is mostly an "eleven" number. So it's brighter than 123.
And if you didn't think I was insane before this, then kindly disregard this note. But if you know the truth, then you're welcome to read and remember.