Step 1. Download image from previous post.
Step 2. Open in your preferred image editor.
Step 3. Add three rectangles of any color (including white, if you like).
Step 4. Post modified image.
EDIT: For clarification,
- Gradient colors are allowed, but this needs to be a single gradient, not multiple
- Rotating the rectangle is allowed (but skewing is not, as the result is no longer a rectangle)
- No erasing. You can overwrite, but do not erase. Or in other words: Transparency / semitransparency is "you can (partially) see through my rectangle and see the colors that were underneath it", not "my rectangle overwrites pixels with transparent ones".
