Making a Game Boy game

Recently I got an internship doing back-end PHP and Python stuff for a website for my university. It's a really nice job that I find fun and I'm thankful to have. But" at the same time, doing all this high-level web dev stuff has given me a big itch I need to scratch. That itch being the fun of low level bit fiddling. itch.io's weekly game jam email came in my inbox and it announced the Mini Jam 4. It was a 48 hour (well, a bit more actually) jam where the restriction was to have graphics like a Game Boy. My perfectly logical and sound reaction to this was to make a Game Boy homebrew, because that seemed neat to do. The themes were "seasons" and "flames". I'n not a programmer, but I can imagine old consoles like the Game Boy are great platforms to use to expand your programming skills.