Is this your article Wildhoney? It seems to be authored my Mark Kempton.
Anyway, the article is very simple and lacks depth.
Blue is the complementary colour for yellow, it is effective and they work well together. But it is interesting to note that Mark believes it is a colour we will skim over and not remember. Therefore it would be an important aspect of colour theory to take note of.
Thanks Wildhoney, this will not be forgotten in my vast expanse of colour theory jibberish