Well, a big thanks to Miles for what was an absolute treat. My earlier misgivings proved groundless.
I have to confess, however, that I totally lucked in to the correct column. Basically, I misunderstood the preamble (quelle suprise!) and thought I could use probability theory to narrow down the options. This should have led to 3 contenders but, being a total jackass and for the same reasons as outlined in my posts @24-27 with Mattrom, I completely missed one of them, leaving me with 2 choices.
At this point I sent my thoughts and their results to Ginge, who politely and patiently explained that my probability theory approach was wrong and suggested an alternative way to narrow the field. So, using this new approach I decided to begin with one of the two I'd already earmarked and, wouldn't you know, my first pick turned out to be the correct column.
Enter my art supplies, and boy did I go to town! Pink, green, yellow, blue, mauve and combinations of others. The end result is one of the most colourful grids I've done in ages....
... maybe since Vagan's EV puzzle on The Book of Kells - but let's not open that can of worms (I'm still doing daily penance to earn forgiveness from Malone and Drxx) 😂