Red Peppers

1) Why are these peppers changing color?
2) What is the mechanism of the color change?

[@randomguy2588]

that's very interesting maybe it's because the bell peppers are maturing (?). ive heard they lose chlorophyll content as they mature and since chlorophyll is the main reason why they look green, the decrease will make them lose their green color idk

[@grahamwhitney1887]

pH of soil?

[@shoshanaberkovic443]

I have no clue? is it a fungal or other kind of pathogen doing it? are they supposed to change color?