To activate Threshold, Touch Hold and Drag a Swatch color over the area you want to fill. When dragging your color onto the canvas, keep holding down until a blue line appears on top of your screen. Swipe your finger left or right to adjust the fill Threshold.

How do I change the drop threshold color in procreate?

To adjust your Threshold, begin a ColorDrop by dragging your colour onto the canvas, but don’t release your finger from the screen. After a moment the blue Threshold bar will appear at the top of the canvas. Drag your finger to the left to lower the Threshold, and you’ll see the restrictions of your fill change.

Why is procreate stuck in grayscale?

Try doing a hard reboot to see if that fixes it: first clear all backgrounded apps by double-pressing the Home button then swiping up on them. Then hold down the Home and Lock buttons together until the screen goes black, wait a few moments, and turn the iPad on again.