Seen, but unnoticed - a blue train [ENDED]

Paraphrasing a certain video game character:

There is much information to process in this world, so it no longer surprises me to learn how many people don't really notice finer details.

Even on SG, there are some features that aren't actually known to be there. Anyone can see them of course, but nobody takes note of their existence. Or at least they aren't talked about anywhere I could see. Here comes this thread, I suppose.
Oh well, here's a train. Check it out,and try to find out if you know why I called it a blue train.

And if you exited the train, or are an impatient cookie, here's an explanation. It's really quite simple.
From what I see, Steamgifts extracts a dominant color from game's miniature, and makes a nickname of giveaway's creator take that color on giveaway page.
And I made a train where giveaways are meant to give me a blue colour. Simple as thatWith 30

Do you know of other "hidden" features on SG? Care to share?

Afterthoughts

With 300+ entries in some of the giveaways, and just over 200 poll answers, I come to a sad conclusion, that even in discussions, there is about a third of people who either don't read the thread, or are too busy pressing "enter giveaway" button to press a thread poll "vote" button.

Also, despite the thread bringing attention to "finer details", surprisingly few people found hidden train carts. Very disappointing, but oh well, it's the risk associated with puzzle making. Congrats to those who made it though. :)

I'll keep the topic open for some more time.