No, I don't have time to sub it for episode 13. Yes, it is available on cable, but not in VOD section. Episode 11 and Episode 12's sub are both transcipted, by listening.
The subtitles are probably in .srt format so in VLC settings you can only change the color of every subtitle and that's not what you want.
You should research .ass format. Sounds funny, but it was developed mainly for anime so that you can change position, font etc. including color per 'actor'. Download Aegisub (that's a program that opens ass), open the video and srt file then set up the colors somehow (never done it myself so can't give you exact directions but I think you can either change the color manually per line or set who's speaking what and then assign color to the particular characters) and save file as either .ass or .ssa (both opened with VLC) and repeat process.
I've burned subtitles into videos myself but I always used Avidemux and not VLC streaming.
EDIT: Now that I think about it, you could also do this in srt format with HTML tags like <font color> stuff with a notepad and it should show in VLC.
https://web.archive.org/web/20171124005808/http://www.visualsubsync.org/help/srt
visualsubsync is a program that makes it quite easy to subtitle a video, so you can use that. But like I said, if you don't want to go through that, the easiest way is just to write down all the translations in a .txt file. Afterwards I can add them to an actual subtitle file with visualsubsync.