I think most people agree there isn't just one best colour, because the colour in one model might work better with a certain background compared to another model which is coloured very differently. Previous thread on this with some example pics:i would like to know what is the best backround (color)
I think as the forum now automatically resizes photos included within posts that any size within reason is fine. I wouldn't post a full-size image straight from a high-red camera though, they're huge on screen! 800 to 1,000 pixels in width is probably an okay average size, showing enough detail without being too large.also i would like to ask the size that the photos should be to be posted correctly?