I really don't think that coloring the arrows is going to be a good idea. That will carry entirely too much meaning. People will think the red has something to do with the button and will be confused.

I also suspect that you haven't thought this through. Try mocking up a page full of red arrows instead of red dots. Even without doing so myself, I predict that because the arrows have twice the area of the dots you'll find that it looks far more cluttered.

Meanwhile, my bikeshedding alarm is flashing. ;)