Congratulations on refraining from self-harm for four days! I am so glad you're dedicated to recovery. You're definitely taking some awesome steps and I fully support you.
The redness of the scars is part of the natural healing process. A scar takes about a year to fully heal. It's generally around that time that the scar will fade from a visible red to a pinkish or whitish color. Unfortunately, that takes time. There are some things you can do to try and minimize the coloring. I've heard using Mederma can help, as can rubbing shea butter or Vitamin E oil into your scars. Unfortunately the only other real way to hide them than using concealer or makeup products is to wear clothing or accessories that covers them.
I hope that helps somewhat. Congratulations again on your progress, and I hope you keep it up! If you ever need to talk to someone my inbox is always open.