change background color after apply background color

[lewbei]

I cannot change the background color after apply draw_rect in the pdf. For example, I have apply red by using draw_rect, then I want to change to another color. Is there a way for me to change the rect color or remove the rect? I used redact but it will removed the whole page.

[JorjMcKie]

No this is not possible. All draw_* methods of Page, resp. Shape are "forever".
Redactions can only remove text, images and links.