What does Orange mean in Code Geass? [SPOILERS]

[Diablo]

I know that Lord Jeremiah is called orange in Code Geass by Zero. What does orange mean?

Jeremiah is also threatened by one of his colleagues that he'll be sent to work in Orange farm back in Britannia, and in the end he's also seen working with Anya Alstreim in Orange farm. Do these things have any relation to the name orange.

[Koby]

Lelouch, in the guise of Zero, interrupts the execution and hints that Jeremiah has been bribed by calling him "Orange". (It is usually pronounced "Orange-kun" in the original Japanese version. The honorific -kun shows a level of formality that hints of a prior relationship between the two, to make it appear as if Jeremiah had been conspiring with terrorists. This is lost in the English dub, which instead implies that "Orange" was a code word of some sort, preserving the implication that Jeremiah was in on the terrorists' plot.) Lelouch uses his Geass to force Jeremiah to help him escape with Suzaku, resulting in Jeremiah's disgrace when they ultimately succeed with his aid.

After hearing Lelouch's motivations, he returns to sanity and swears his loyalty to Lelouch in order to redeem his failure to protect Marianne. He now takes the nickname "Orange" as a compliment, seeing it as the name of his loyalty.

At the end of the series, he is shown cultivating an orange farm with Anya, smiling contently. Ironically, this was the fate that Guilford suggested awaited him in the first season after releasing him from prison, to which he was furious.

[Diablo]

Lelouch, in the guise of Zero, interrupts the execution and hints that Jeremiah has been bribed by calling him "Orange". (It is usually pronounced "Orange-kun" in the original Japanese version. The honorific -kun

Oh, I had seen the dubbed version, so I did not know it was "Orange-kun" in original Japanese.