I use a program (SoWhatPro) but have used an Amazing Designs software on my lap top that let you review or change the colors on screen and see a quick stitch out of exactly where each color/section is going to sew - and you can totally change or delete a color selection if you want to. I find it very helpful with my Brother 770 and have the laptop next to my machine while stitching out. Of course you can also change color simply by putting another color spool on your machine, but sometimes you would like to get an "ahead" look "if I changed the color."
Marysewfun