If you want to change the color of the file, here is what you do.
In Photoshop or Photoshop Elements:
1. Open the PNG file.
2. Click on foreground color and change to desired color.
3. Go to Edit>Fill. Choose foreground color. Make sure preserve transparency is checked and mode is set to normal, opacity at 100%. Click OK.
To change a single word:
1. Do steps 1 and 2.
2. Use the polygonal lasso tool to select the word you wish to change.
3. Follow step 3 above.
To print this, you can click on the printer icon at the bottom of this post.