Involved in chromoplast differentiation. Is associated with a cellular process that triggers the differentiation of pro-plastids or other non-colored plastids into chromoplasts for carotenoid accumulation (PubMed:17172359, PubMed:18256051). Associated with carotenoid accumulation in de-etiolated cotyledons (PubMed:23887833). Controls leaf petiole elongation by suppressing the expression of ERF1 genes (PubMed:21175633). Interacts with ERF1-2. Targeted to non-green plastids. Expressed in young leaves, curds and flower buds. A probable gain-of-function mutant of OR gene confers the accumulation of high levels of beta-carotene in various tissues normally devoid of carotenoids, converting the white color of curd tissue into the distinct orange color. Hybrid OR cauliflower containing large amounts of beta-carotene is commercially available. Its sequence is related to the DnaJ family but lacks the J domain. The CR-type-like region is similar to CR-type zinc-fingers. Belongs to the orange-like family.