Tricky this one. There are three ways to create a shape in Photoshop and I’ve been working with shape layers so I can warp the result. So far so good. You select the Custom shape tool and then from the tool options you select the Shape Layer option and create your shape. You get a Fill layer with a vector mask showing the shape.
To change the color – double click the Fill layer thumbnail and choose another color. Again – so far so good.
To fill the shape with a gradient – yikes.. there is no obvious option. Here’s a hint – Layer styles! Click the shape layer so you have it selected, choose Layer > Layer Style > Gradient Overlay. Select the gradient to use or make your own custom gradient and click Ok.
Now you know…