Using a splash of color in black and white photos is a great way to create high visual impact, but unless you're comfortable using Photoshop that's an effect that can be hard to create -- unless you're using ColorStrokes. This Mac app strips the color from your photos and then lets you paint where you want more than just black and white. You can choose to reveal the photo's original colors, paint new colors in, and even apply effects like hard or soft light and vignettes. ColorStrokes is normally priced at US$9.99, but you can pick it up through Monday for $2.99.
Check It Out: Easy Grayscale and Color Image Effects with ColorStrokes
