I've used both color and mono CCDs in the past and continue to image with a mono 383L+ and a DSLR color camera. If you image under dark skies and are happy to do RGB imaging, then color cameras can be used to great effectiveness. If you image in light-polluted skies or want to do narrowband imaging then a mono camera will actually entail less processing in my opinion. With some effort you can get decent Ha/OIII bicolor images with a color camera (forget SII however) - with the drawback that only some of the pixels get any signal, the rest contributing only noise due to the Bayer matrix - but it's not easy to process. Narrowband with a mono camera is in a whole different league. Depends upon your conditions and what you want to accomplish - it's not so simple as color being easier to process than mono.
...Keith