Mandarin Duck Breast - it's dark blue with a bronze shimmer.
https://cdn.masto.host/mastodonart/media_attachments/files/109/947/157/224/723/888/original/57c4f90b8460e5f7.jpeg
New inks! They're all Van Diemans, made in Australia using only Australian ingredients and Tasmanian spring water, are non-toxic and vegan - https://www.vandiemansink.com.au I also emailed them about lightfastness, they said at least 24 months, 48 if kept out of sunlight, but they've got swatches that haven't faded in the six years since they've been making ink.
Info in alt text.
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