Nowadays, even people with English as their FIRST language have completely lost their ability to communicate! It is said that this is the "age of communication." I believe this is the "age of non-communication." Anti-communication. The Opposite of Communication. Right? I will call someone or some company, and, they actually ask you to please EMAIL or TEXT them from now on instead! (Ostensibly for "our convenience" e.g. "instead of waiting to talk to us, you can send us an email...") To me, that is AntiCommunication (and an insult to those who still enjoy a voice/real conversation). With the plethora of social media venues, instant texting, email, little cameras embedded in all of our devices, instant this, instant that, think back, I challenge anybody to remember the last meaningful communication they had with anybody. Remember the days of the Payphone (you know, back when you could ask if they 'had a phonebook' and they wouldn't look at you like a deer in the headlights?)? More conversations and meaningful communication happened back then than anytime nowadays.
Anyway, sorry Stanw, I know this has nothing to do with you, or your post... I just saw the words "English second language," and that sort of activated a 'rant' I had percolating in my subconscious!
To try to answer your question, I just wonder if ICC profiles are not necessarily Operating-System Dependent. In other words, what would happen if you install a PowerPC ICC profile? I would think it wouldn't harm anything; rather, it would either work, or it would not. (I would delete it, though, just to be safe, if it didn't work).
Here's a whole thread dealing with this exact topic. I didn't have time to read it thoroughly, but it looks like there is a solution!
https://discussions.apple.com/thread/4660208
Good luck!!