Hello EmberThe_Furry,
For help with the colors on your iPhone, have you checked your accessibility settings? If not, view and toggle your Red/Green for Protanopia setting to test. If needed, check out the information below and more details found in the article here: Use display and text size preferences on your iPhone, iPad, and iPod touch
"Turn on Color Filters
If you have color blindness or other vision challenges, you can use Color Filters to help you differentiate between colors. Color Filters can change the look of things, like pictures and movies, so you might want to use it only when needed.
Open the Settings app, then tap Accessibility > Display & Text Size > Color Filters. You'll see three examples of color spaces to help you select an option that fits your needs. Swipe left or right on the examples to find a filter that works best for you."
Be sure to also check your color intensity and color tint. You can find photo examples and helpful information in the same article.
Should the issue remains navigate to Settings > Display & Brightness and see if the True Tone option is enabled. If needed, this guide can help as well: Adjust the screen brightness and color on iPhone
Cheers.