First you will want to start a new project, How To Start A New Project
Step 1- Open the file you wish to use. Here you can find the file types you can open – What Files Can I Open in DesignScape?
Step 2- Make sure Transform Controls box is checked. (This allows you to select and move your design around)
Step 3- Click eff in the bottom right of the window.
Step 4- Click Color Overlay.
Step 5- The Color Overlay box will pop up. Click the colored box next to 100% to change the color.
Step 6- Click OK once you have selected your color.
Step 7- VOILA! Your design is now a new color!