I'm not sure how you settled on assuming the color selection for the layout for Pokémon Quest is reasonable, but you don't need to be a UX expert to know that yellow and awfully bright green don't mix well for readability. My recommendation would be to use a better color schemes generator than random.org.

https://coolors.co/ is probably the most known and usually helps a lot for beginners.

Okay, I'll try that thanks.