It was made by PS. The color is not limited, and you can choose other colors after selecting the text. Watermarking method: make a watermark: if it is text, choose the foreground color first, and the watermark color is generally white. Enter text (or pattern) on the newly created image, and use the Free Transform tool in Edit to adjust the size \ position of the text or pattern. Reduce the opacity (in the window on the right), depending on your own requirements. After the repair, it is stored in a transparent background format, such as PNG or PSD. When you use it in the future, you just need to call up the picture and pull it onto the picture to be watermarked.