Not to be crazy on a Sunday morning but...
...why is this stadium, where Ginga reminded Kyouya of his blader's spirit, blue and green?
seen from Germany
seen from Yemen
seen from Chile

seen from Netherlands

seen from Netherlands
seen from Switzerland
seen from China
seen from United States
seen from United Kingdom
seen from Australia
seen from Pakistan
seen from Jordan
seen from China
seen from China

seen from Switzerland
seen from China
seen from China
seen from United States
seen from United States
seen from United States
Not to be crazy on a Sunday morning but...
...why is this stadium, where Ginga reminded Kyouya of his blader's spirit, blue and green?
Kyouya: character’s development in two quotes (part 5)
Beyblade Metal Fusion
“It was terrible. (...) Even now I can still hear it, the sound of the wind blowing up from the bottom of the valley, the growls of those worthless hungry wolves. You can't even imagine this. The most horrifying place on earth. But I saw it, I lived it!”
- to Benkei, episode 9
“What does someone like you understand about me?”
- to Ginga, episode 10
Beyblade Metal Masters
“This is nothing compared to the special training I went through in order to battle Ginga.”
- to Damian, episode 100
Kyouya learned a valuable and too rare abillity: putting things into perspectives.
He grew up so much since the beginning of the first season, when he was just a bored and spoiled brat, who thinks he was the centre of the universe and that his trials (like losing against Ginga and jumping voluntarily into the Wolf Canyon) were the worst things that could happen in the whole world. Then he saw that some people have real problems (*cough* Ginga *cough*).
(part 1 / part 2 / part 3 / part 4 / part 5)
Why Benkei, Kenta et Ginga forgave Kyouya after the Wolf Canyon?
Because he wasn't in his usual state. They all saw it, and even Leone agreed.
The wind is said to be able to drive people crazy... Researches are done and, scientifically, it's accepted that wind can increase irritability, aggressivness and behavioral disorders. And Kyouya, who's intuitive, kind of understand it, even if he was gone too far to be able to come to his senses alone.
Benkei: This is a fierce clash but I'm used to it. This is who we are, this is what we do. Leone's attacks are always intense but for some reasons today- today something seems a lot different.
Kyouya: It was terrible. (...) Even now I can still hear it, the sound of the wind blowing up from the bottom of the valley, the growls and those worthless hungry wolves...
Kyouya was already angry when he jumped into the canyon (against Ginga for defeating him, against the Face Hunter for making him meet Ginga). Into the canyon, he was scared, because he was surrounded by hungry wolves and nearly died countless times, running on adrenaline, which could only make his state worse. And he was alone. That was one of the thing that shaked him the most about the Wolf Canyon : he was utterly alone, like he never felt before. He never stopped to repeat it during the two episodes where he made his return.
Kyouya: The only thing you can rely on in the end is your own strength.
Benkei: Is that why you think you no longer need the Face Hunters or me?
Kyouya: Yes. I'm stronger now. I don't need others to protect me. In that terrible place, I learned how to live on my own. I don't need things like friends.
(notice how the Face Hunters worked more like some security detail, or a fan-club, than a real gang).
Kyouya came back to Bey-City, decided to beat Ginga, a goal he hung on throughout his alliance with the Dark Nebula (which certainly lasted more than one month). He decided to get rid off the Face Hunters, because he "managed" to survive the Wolf Canyon alone. His anger increased (something he didn't need, really) when he learnt about Benkei's "betrayal" for Ginga, the one he wanted so much to beat.
Then, the 10th episode was all about Ginga trying (and finally succeeding) to make Kyouya comes to his senses.
Kyouya: I fought and I survived on my own when I was alone in that rock valley. I sharpen my fangs in order to destroy you.
Ginga: You weren't alone.
Kyouya: What's that?
Ginga: Remember the blader's spirit that you took with you but left back in the wilderness.