6/10. Somewhat creative by adding another termination, but achromatism sounds a bit too common.
Antichromatism sounds more original.
Antichroma?
Dischroma?
Anticromático?
Hmmm... But none of them can be reduced to achro...
Achro sounds cool and I like calling you like that.
You can still call me eblf and I still prefer to be called that