Depends where in the country, doesn’t it? Not all sports teams in the US are in the warm areas.
And Newcastle is not exactly the coldest part of Europe.
It will snow in hell before they win shit however.
And that’s coming from a fan.
I don’t know what this stuff costs in Europe, but if I want to deck myself out in Blue Jays gear, you better believe I’m laying out a lot of cabbage. The merchandise is crazy expensive.
My wife bought be a licensed Blue Jays hoodie for my birthday and it cost as much as a leather coat. Of course that’s not going to do me any good on a hot summer day at the ballpark, so I guess I could buy a jersey. The last time I did that it cost me $130, and it wasn’t the absolute highest level of quality; that would have cost over $200. (It’s just as well; if I buy a jersey, the player whose number it bears is doomed.) When my wife got us both Jays cap that set her back over fifty bucks. CAPS.
Maybe we just can’t afford it.
I have noticed in Boston, it is fairly common to wear gear from the city’s other teams. You see a lot of Bruins and Patriots gear at Fenway, and Red Sox gear at the Garden.
Exactly right. Look at the NCAA basketball championship tonight - you’ll see some crazy fans wearing team colors for both North Carolina and Villanova.
Though the NFL has that as well - look at the Dawg Pound in Cleveland and the fans in Oakland.
Here is a small picture of the Calgary Flames sea of red.
Another explanation could be, IIRC, the areas behind the goals are the “cheap seats” - in fact, they may still be standing-only areas in some countries (pretty much every stadium in England had this, until a safety report in (I think) the early 1990s caused all of them to switch to all-seated) - where the more rabid/loyal fans would be, especially for the visiting team.
I don’t know about pro football games, but college football fans are overwhelmingly dressed in their team colors. Tens of thousands of them at each game.
I think European soccer fans wore team colours more often than at US sports fans in the past. I get the impression the gap is now closing. I don’t have empirical proof of this so don’t shoot me down in flames.
The Dutch national fans are certainly one of the most well known fans for wearing team colours.
I buy soccer jerseys as souvenirs of traveling in Europe. The pricing seems to be similar to US major league pricing. You can get official games jerseys for around $100 to $150. But as with the US there are shirts and things that are officially licensed but are not quite what the players wear for less money. From TV you probably cant tell the difference and just see the color.
I agree with the OP European soccer fans seem to show up in teams colors more and US sports fans. They also seem to have more organized rituals like songs and chants that everybody knows. I haven’t seen anything like that at football, baseball or hockey games I have attended here in the US.
I mostly attend baseball games for the Padres. The Padres do not have the largest or most dedicated fans. When the Dodgers or Giants play in San Diego I would not be surprised if their fans outnumber the San Diego fans.
To continue with an observation from some one up thread. When I go to games about 3/4 of the people in attendance are wearing some kind of shirt proclaiming there allegiance to one of the teams playing. But they range from jerseys similar to what the team is wearing to older colors to just shirts with team name and logo that have nothing to do with any color the team uses past or present.
If you watch cold-weather games at Lambeau, you might think that the Packers’ colors, are green, gold, and blaze orange. 
(For many folks in Wisconsin, their warmest gear also happens to be their deer-hunting attire.)
I think you see more of that at college football games than at pro games – college teams are more likely to have fight songs, school songs, etc.
I kind of suspect that the pro sports fandom in the US is a little more relaxed overall- maybe because the teams tend to be more geographically separated, and the fan base is somewhat more dilute.
Most of the vaguely nutty fan behaviors you see in Euro soccer are present more at the college sports level than at the pro level, excepting the hooliganism, which seems to be more of a pro thing. Extreme uniformity in dress, chants, rabid fandom, etc… are all pretty common in college sports.
For example,here’s a shot of Michigan Stadium, 2nd largest in the world. Pretty much solid blue & gold (Michigan Wolverines’ colors).
Another reason may be that in American sports, there may be more mixing of fans from each team (especially when the visiting team has a large fan base). In European soccer matches, my understanding is that supporters of the two sides are largely segregated from each other in order to prevent fights.
Depends on where you live. Some cities are more sports crazy than others, and it might depend on sport. Some sports are more popular in certain areas than others.
Oh yeah – especially Steelers games, due to the Terrible Towel. It’ll look like someone dumped yellow paint over the entire stadium. At Penguins games, you might not be able to notice it from a crowd shot, due to people wearing away style jerseys, but close-ups will show that pretty much everyone is at least some sort of team gear.
(Seriously, don’t Bears’ fans wear team gear at least? That’s pretty sad.)
I once asked what would happen if one lit a flare at an NFL game. My guess is you’d be arrested, banned from the stadium for life and be branded for life as a terrorist.
My subjective impression is exactly the opposite of the OP’s. I have fairly recently started watching English soccer on TV and ITSM that actually fewer Brit fans are wearing team colors (although of those who are, they are much more likely than Yanks to shell out for authentic team jerseys). I’ve been to several Bears games, and my guess is that at least 80 and probably 90% of the fans (not counting visiting fans) are wearing Bears crap. There are many sad things about the franchise, but I don’t think that’s one of them.
Maybe, but I have yet to see a crowd of 100,000+ at a pro football game, all wearing the same colors and all doing the same yells/chants/cheers and singing the songs.
Literally 8 of the top 10 stadiums (2nd place through 9th place, FWIW) in the world by capacity are US college football stadiums (Michigan, Penn State, Ohio State, Texas A&M, Tennessee, Louisiana State, Alabama, University of Texas), and I’ll just about guarantee you that all of those are at or near capacity, and a sea of the home team’s colors, on any home game weekend.
You are deducted five thousand Scrappy points for failing to mention the Angel City Brigade.
…ONE THOUSAND POINTS FOR EACH OF OUR CUPS
I don’t know why the Bears got called out. Maybe it’s because there will be people wearing blue, orange, and white (away jerseys), plus various team merchandise in grey. So there won’t be a sea of people wearing the same color.
i mean look at this picture here. All but a few people are wearing Bears gear.
Hell, Bears fans are known for showing up in large numbers in away games.