The tartan is specifically defined by the following weave code:
Y..B.. G..S..G...S..G..S..G..B..A..B..K... Ancient Colors
8...2..20..4..20..8..20..4..20..32..56..2...8... Full Pivots
This weave code means that the threads begin with 8 threads of yellow, followed by 2 threads of black, 20 threads of green, 4 threads of scarlet, 20 threads of green, 8 threads of scarlet, 20 threads of green, 4 threads of scarlet, 20 threads of green, 32 threads of black, 56 threads of azure, 2 threads of black, and 8 threads of sky blue. At that point the weave pivots and returns, beginning with 2 threads of black, and continuing the sequence in reverse order through 8 threads of yellow, at which point it pivots back again.
Ca. Gov. Code § 424.3