Contrary Wife is a very simple quilt block. Very similar to Maple Leaf, Spool and Snowball—each made of basically a nine patch, but with some patches consisting of half square triangles. Depending on where you place those triangles and in which direction and colour, you can create endless patterns.
And again, I have seen this block done in so many different variations, some using more than three different prints, others using only two. But for me, only Lauries example really works—at least if you want to stress the block’s name.
Stress should lie on the prints facing each other in opposition. If you do the three or four of the five squares in a different colour than the rest, or if you choose to do the triangles in four different prints or arrange them so that the same prints do not face each other in the centre, you will end up with a completely different effect. Not ugly, but just not contrary wife-y.