Both corpus luteum and macula lutea are

Both corpus luteum and macula lutea are characterised by a yellow colour. After an egg is released from the ovary, the cells that line the ovarian follicle change shape and colour to become a corpus luteum (yellow body). Macula lutea is the yellowish spot present at the posterior pole of eye. Lutein, zeaxanthin, $\alpha$-carotene and $\beta$-cryptoxanthin are responsible for its yellow colouration.