Years ago I started using a very simple SG made up of lines as my "logo". I evolved this over time and thought it would be even better if I had a whole font in the style of it. So here's how I created my personal font with code and refined my logo in the process.
Designing for colorblindness is important as 8% of people have it. But there are many other reasons color might be hard to see so good design should be baked in from the start. A colorblind "mode" shouldn't be tacked on as an afterthought. There are several tools and techniques to help make designs better for everyone, colorblind included.