It signifies a high (or extremely low) rep level when they are brighter.
At least 5: India, Pakistan, NZ, Australia, England. Any more than that depends on demand (the majority of members come from, or support those 5 countries)Love the new skin, well smart. Will have to wait and see the new ones. How many countries skins will be made>
I like the skin although it takes a bit of adjusting too.
I think now we should be allowed to turn off how many posts we've got if we like, that way anyone who has above 1000 won't look like a sad weirdo and also i think noobs don't like to argue with people who have got loads of posts all the time.