As a long time reader of the blog, you probably already know that not all LED are made equal. One of the prime parameter indicating the quality of light that an LED panel gives out is its CRI (Color Rendering Index) rating. The higher the CRI, the more colors that light is able to render, giving a more precise image for the camera to capture.
If you heard about the green tint or the purple hue LED horror stories, those are both a result (or the cause) for a low CRI rating.
The folks at Videomaker put a colorful object under 4 types of light: tungsten (very close to CRI of 100), and three LED lights: a 77 CRI light, a 99 CRI light and a light with a unknown CRI (which probably means very low) and compared the results.