Sorry.
So this is a fairly standard, well known design that I copied from Sutton’s book (pp. 25). The pencil version is here:
Described as “Twelve and four in the square repeat version of a fundamental pattern”. Would be nice to have a better naming system!
Not sure if I saw this colour scheme somewhere, but the red/orange/yellow looks quite good:
I gave the final version as a present to my mother for her birthday.