The design is so basic that it would not be hard to design something just as bold but different (and perhaps more stylish) and using the same colours, in such a way so it’s not seen as a Derivative work (a modification).
Make the new work copyfree.
The Aboriginal people may even adopt it over the one they have.
It would also piss off the law firm that is behind WAM clothing.
Having a deeper look into the history of this, it would seem that WAM is being run by Semele Moore of Archibald & Brown Lawyers and Ben Wooster, are maybe taking over the operation of Birubi Art Pty Ltd now in external administration.
Birubi Art Pty Ltd with Wooster as director, became of interest to the ACCC for selling fake Aboriginal Art falsely representing that it was made in Australia, when it was made in INDONESIA.
The ACCC and the Federal Court took a dim view, more about that is here:
AND the Federal Court Judgement:
https://www.judgments.fedcourt.gov.au/judgments/Judgments/fca/single/2018/2018fca1595
AND 207 comments on Reddit: https://www.reddit.com/r/australia/comments/bydzgg/a_nonaboriginal_business_has_licensed_the/
ACCC:
https://www.accc.gov.au/media-release/court-finds-that-birubi-art-misled-consumers-over-fake-indigenous-australian-art
