Sunday or Holidays color change are possible. But removing or adding holidays might be impossible because holidays don't just come the same day every year. Many U.S. holidays happen on certain weekdays of certain months and the dates of them are changed every year. But I'll look into the Sunday and holidays changes, thanks. I doubt I will add a data file to this program because personally, I have no need for one. I thought about making it a calendar to put any info you want on any day of the year, but I use a paper day-to-day calendar myself and I wouldn't want people to rely on a computer program for important appointments they need to go to, especially medical appointments. Although Windows already has something like this built-in anyway. But thanks for the suggestions, I'll look into some color changes a little bit I think, when I have time.
