|Maybe I should have warned you to wear sunglasses for this...|
Of course, I have spent the better part of the day wishing I had done the math before casting on. Instead, I knit a band in the desired gauge and size and then tried to figure out how many stitches I should be working in the round to make the Zebra Chevron pattern work out. Much muttered swearing and ripping of yarn and scribbling of long division later, I think I have it. And I think I'm buying a calculator.
The actual hat will be in the same brand and size yarn as the swatch, but the Lego blue is being replaced by a heathered gray which will hopefully temper the violent pink.