1. Open replace1.jpg and replace2.jpg from replacecolor folder
2. Image > Adjustments > Replace Color...
3. Change red color on man's shirt, and flowers

To use the Color Replacement Tool:

1. Select the Color Replacement Tool 
2. Choose a brush tip in the options bar. Generally, you'll want to keep the blending mode set to Color
3. For the Sampling option, choose one of the following:
   • Continuous to sample colors continuously as you drag
   • Once to replace the targeted color only in areas containing the color that you first click (use color picker first)
   • Background Swatch to erase only areas containing the current background color
4. For the Limits option, select one of the following:
   • Discontiguous to replace the sampled color wherever it occurs under the pointer
   • Contiguous to replace colors that are contiguous with the color immediately under the pointer
   • Find Edges to replace connected areas containing the sampled color while better preserving the sharpness of shape edges
5. For tolerance, enter a percentage value (ranging from 0 to 255) or drag the slider. Choose a low percentage to replace colors very similar to the pixel you click, or raise the percentage to replace a broader range of colors
6. To define a smooth edge to the areas you correct, select Anti-aliased
7. Choose a foreground color to use to replace the unwanted color
8. Click the color you want to replace in the image
9. Drag in the image to replace the targeted color