You can upload a different picture. Also, 'masters of the several sheets' and 'thousands of pictures' can be converted to color.
B7:Coat - Reduce the brightness of the original image, apply a specific color.
Free Online Photo Editor | Photo-kako.com
This website is a free online photo editor. You can edit your pictures and apply photo effects. This photo editing software has several unique digital image processing apps. It's one of the most popular free online photo editors in Japan. You can use output images for anything.