Hi Anchie --
I'm not sure how flexible the advice is, but with prints I found that I was often unknowingly adhering to the spirit of the "law" vs the letter -- you might be doing the same.
I think you know I wear both smaller- and larger-scale prints (print lovers unite!) so here's what I mean by that.
I always do what I call "the 10-foot test" to see if a print or pattern is wearing me instead of vice versa in terms of scale and type of design.
When I ran into the advice, I took a look at my fav prints to wear.
- Some followed the "neutral(s) + 1-2 color-color" rule exactly. [Variations on a color don't count as extra.]
- Some had many more shades close-up! But when I stood back, usually 1 or 2 color-colors dominated.
So that might be an interesting exercise for you. See how close you toe that line haha!