Draw the flag of Colombia in the center of the canvas. It is 150 units wide and 100 units high.

The flag has three horizontal stripes:

1. The top yellow stripe is 50 units high.
2. The blue middle stripe is 25 units high.
3. The red bottom stripe is 25 units high.

The stripes touch each other and stretch across the full width. Do not add outlines or gaps.