Thanks for posting. (I'm glad you like the tutorial collection so far. I hope people are getting some good use out of these things.)
My initial reason for creating this article was to give me something to link to from other tutorials so I wouldn't have to keep writing the same instructions over and over again but then I decided to make it a bit more general and give more information.
I'd completely forgotten that Scribus has a Colour Wheel! Shame on me. I'll have a proper look at it and add instructions to the article. Thanks for the reminder.
My recommendations about CMYK were very simplistic so I'm not surprised they don't give the whole picture. I don't get much of my stuff printed - it's mostly digital-only - so the advice I gave could well be missing some important information or be round the wrong way in places. (It was based on my memories of a while ago.) So, if you have better recommendations I'd be happy to change what's in the article to match up-to-date practices - without getting into Colour Management (which isn't an area I know well at all). Even if everything I've said in the article is wrong I'd like to make sure it's put right. If you want to write something yourself or point me to somewhere on the web, that would be very helpful.