I installed CHDK in my Canon SX240. It lets me access RAW files from the camera. RAW files give me a lot more data to work with in PhotoShop and better image quality.
For some reason, most Fine Art Photos are presented in B&W. I always shoot in colour, but sometimes I convert images to B&W when I edit them. I usually prefer the colour versions, but sometimes an image works well in B&W. B&W isn’t just the absence of colour though and getting the right “tones” can be harder than editing a colour photo.