Parameters of Image Color Picker - a React component:

<ImageColorPicker imgUrl={'img.png'} pickerMaxSize={[width,height]} Optional: roundness={number - border radius of the color picker}
selectImgButton={true/false} onColorPicking={callback which gets a color while picking} onColorPicked={callback which gets a picked color}
onColorPickedText={'a text to display after a color is picked'} showRGB={true/false - show color's RGB value } ></ImageColorPicker>

Github.com/Roman-Flössler