Other work an old photo needs
Color is one job. A better scan, a named dye, or a new scene are different jobs.
People bring one box of photographs and ask for several different products. Some of those jobs belong together. Some do not. Black to Colour is the color pass for a single still photo.
A scan comes first
The photograph has to become a file before any color tool can see it. A flatbed scan of the print, with the whole frame in view, is a different product from colorizing. Photographing a framed picture on a wall, or a glossy print under a lamp, adds glare and a second crop. Do that step with a scanner, or with a careful copy stand, then upload the file here.
Color, and the repair that rides with it
This product colors the photograph you upload. In the same pass it is asked to ease scratches, lower noise, and hold detail, while keeping the face and the crop. That is not a separate restoration app, and it is not a promise that a torn print will look newly printed. If the damage is the whole story, a person who retouches by hand is the right next product. They can rebuild a missing eye. This model should not invent one.
When the dye has a name
Sometimes you know the fact the negative never stored. The robe was muted navy. The uniform had a specific cloth. A short color note on the home page can steer the palette. It still will not certify a museum match. If a family needs one agreed color for a coat, look at the result and say so before you print it. A note is a guide. Your eye is the check.
Jobs this product does not take
A clip of film, a new background, a younger face, or a room that was not in the photograph are other products. They change what the camera saw. Black to Colour is for the opposite request: keep the photograph, and put plausible pigment back on it.
If you have the right to colorize the picture, start with one clear file. If you need a different picture, this is the wrong tool.