Yeah reading. Because that's totally what SF is about.
You and the others are missing the point of SF's character design. Characters' look is (was) built around a given martial art or famous real life martial artist.
Players could recognize the given martial arts just by looking at the fighters. Ryu is the karate guy, fat asian is sumo, and so on.
If you look at Yun you immediatly know he's kung fu. You don't have to read anything.
Some poster above me (explaining that better than I could) pointed out what's the logic in the SF world: energy balls and supermatural stuff come from martial arts training. There are few exceptions (psycho power and such) but still those exeptions are mild compared to ice spamming.
Also I would point out that fire represent ki way better than ice element.
Burning effect is given to represent intense Ki moves, like Ken's shoryuken, Ryu's shakunetsu or Fei's anti-air.
What about ice? Does it look like ki to you? It looks more like magic to me than something tied with martial arts.
Also Kolin brokes a trend with SF: when there's some weird power, it affect the character appearance. A character can have a super power obtained because plot but have to actually look mutated (Blanka, Necro, Gill etc.) or have some weird thing going on (Juri's eye, Viper's suit etc.).
I say Kolin's design is pretty weak.
She's just some random anime girl with magic powers. Guys at Capcom know SF's legacy can't allow that. That's why they bothered with that System thing AFTER they gave her magic powers.