Ar-Rahmaan 37

فَإِذَا ٱنشَقَّتِ ٱلسَّمَآءُ فَكَانَتْ وَرْدَةً كَٱلدِّهَانِ ﴿٣٧﴾

Faitha inshaqqati alssamao fakanat wardatan kaalddihani

Then when the heaven is rent asunder, and it becomes rosy or red like red-oil, or red hide. The Noble Quran