Themperror

Hey, I really like Paint.net but its lacking one major feature that keeps it behind more professional software in my opinion. The ability to work on a single color channel would be amazing (so if you have a RGBA image, you could "disable" the GBA layers and edit only the R channel for example.. The is most useful when only needing to work on alpha for example (and disabling the "RGB" channels would result in alpha being visualized as grayscale (black to white)) Adding this would be absolutely amazing and very much appreciated (I haven't seen a plugin that can do this either...)