--negative can be very useful, but sometimes you may want to invert an image, while not inverting the alpha channel. At the moment --negative also inverts the alpha channel, it'd be good to have this not happen by default, pretty sure --color-bg can be used for this purpose anyway.
--negativecan be very useful, but sometimes you may want to invert an image, while not inverting the alpha channel. At the moment--negativealso inverts the alpha channel, it'd be good to have this not happen by default, pretty sure--color-bgcan be used for this purpose anyway.