Set up your development environment (Ubuntu 20.04)
TODO: Add Windows and Mac instructions.
Run a route replay and ui
TODO: you might have to log in to access the demo route. see the replay readme for more info. This will be fixed.
Dive in to change the speed color
Search for “mph” with git grep in the ui folder
The line right above contains the actual speed. Unfortunately, COLOR_BLUE isn’t defined, but a git grep of COLOR_WHITE shows it’s nvgRGBA(255, 255, 255, 255). Personally, I like a lighter blue, so I went with #8080FF.
Rebuild UI, and admire your work
Push your fork to GitHub
Click fork on GitHub.
Run your fork on device in your car!
TODO: write this. You will have to reinstall openpilot.