When I first came to photography we had to either set up an expensive darkroom or pay for costly developing and printing. It was an expensive pastime reserved for the wealthy or paid professionals. Today we never have to print the images and ask a professional to manipulate the color, we can do it in a few clicks and save them in a file. It’s all free and available. Amazing!
There are hundreds of photo apps you can try out and I’m sure you have a preloaded one on your phone, iPad or camera. Basic apps will at the very least be able to convert your photo to sepia or black and white. More fancy programs give much more flexibility, allowing you to change the color cast from blues to yellows, toggle to vivid or dramatic and change the light and exposure. If you’ve never done this it will open up a whole new world.