ungroup it by right-clicking and choosing “Ungroup”.
Change the color by clicking on the paint bucket.
Then resize the element by clicking and dragging one of the square-shaped points of its bounding box (the cursor should look like a double-headed arrow). Remember to hold Shift while dragging to keep the proportions.
Group the elements again by selecting them, right-clicking and choosing “Group”.
Repeat the steps above with the other parts and when you’re done editing, copy the end result and paste it into your presentation.
