Aha, that makes sense.
I've also tried my hand at the head (3626px118), a lot trickier because it's a more complicated two-sided design on a curved surface. There it's the greenish face markings that I was not able to match. I've put it at dark green (288) for now, though I think it should probably be a more saturated rendition of Olive Green (330)? Based on your mention of "dark violet", I find mention of a 163 Dark Yellow that could potentially be a match?
I've also tried my hand at the head (3626px118), a lot trickier because it's a more complicated two-sided design on a curved surface. There it's the greenish face markings that I was not able to match. I've put it at dark green (288) for now, though I think it should probably be a more saturated rendition of Olive Green (330)? Based on your mention of "dark violet", I find mention of a 163 Dark Yellow that could potentially be a match?