iSplash Color (was iSplash Pro) allows you to convert a photo to grayscale, then colorize one object.
Get creative with the iSplash app! Choose any image and iSplash will turn it to grayscale. Then, choose any part of the image to restore the original color.
iSplash allows you to beautifully modify your pictures and create bold images that pack a punch! It supports PNG, JPEG, GIF, TIFF, and BMP files.