One of my favorite things to do with my old black and white negatives is to colorize them by using paintbrush washes in Photoshop. Believe it or not, this photo I took of wine pouring from a bottle is actually a black and white image of water pouring from a colorless clear bottle. I used layers to create a gradient background, then I considered interesting colors for the wine and the bottle. The wine, I determined would be blood red and the bottle would be a traditional green color. By using the Photoshop brush with varying opacities you get a much better colorized image than you could ever get with those old transparent oil washes from Marshall.