The colors represent Hawaii and are as follows:
Here's the warp:
And the finished piece. It measures about 6" long and 12.5" wide. It'll serve as a sash for the Highland games.
I used all Cascade 220 yarns, including a Cascade 220 blue tweed as it had all of the other colors in it. (Here's my Ravelry project page).
More information about the Hawaiian tartan is here.
My pattern version of this tartan is on Google Docs as a spreadsheet.
I've also found the California state tartan on Wikipedia, along with the thread count. I might have to make this in the future as well.