In any mystery quilt you never know what the final result will be until you already have it cut and many of the units stitched together. Bonnies are not simple, but are usually two blocks combined that make a flow through pattern.
Some are very simple, where you might just end up with 12 churn dashes or whatever block pattern then just sew them together. Those might be done over a day or three. Bonnies starts stitching the end of November, you get a clue every Friday, and it ends when she shows the reveal of her finished quilt. A few times they have gone into mid January, last few years they've ended on New Years day.
a Google image search for Bonnie's mystery quilts gives you an idea of what we've made in the past.
https://www.google.com/search?q=bonn...w=1364&bih=611
Bonnie is a scrappy quilter so if she is using a dark blue as one of the colors she will be using 20+ dark blues.
You can use just one blue, your choice. Or change the colors completely.
in the first or second post of this thread you'll have the link to her site with the fabric amounts needs.