Black and blue from red to purple, you can convert the image gradients.
:No.86 - Heat Map (Thermography)
C5:Gradation - The intensity of the gradient by utilizing the original image.
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.