Q.My Creole Hibiscus Flowers Changed From Original Flowering Color To Solid Yellow Or Solid Pink
I upload a picture of original
Certified GKH Gardening Expert
I will help to have a picture of what they look like, now, also. Something like this will be either a very slight phosphorus deficiency, pH imbalance, or a drastic change in lighting from what the plant was used to in the past.
Here are some articles that will help:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/special/organic/the-importance-of-soil-for-an-organic-garden.htm
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm