I previously did this by hacking
config.colorButton_colors = 'fff,eee,ccc,aaa,999,666,333,000';
the config has moved .. I can probably still do this in the bower_components, but it makes it all too clear it's a hack and will again be overridden in due time.
So, is there a place to customize ckeditor config safely, and more advanded than the wizard ?