法苑珠林 3.33

3.33

又長阿含經云。佛告諸比丘。螢火之明不如燈燭之明。燈燭之明不如炬火。炬火之明不如積火。積火之明不如四天王。四王宮殿。衣服身光不如三十三天。乃至展轉色究竟天光明。不如自在天光明。自在天光明不如佛光明。從螢光明至佛光。合集爾所光明不如苦諦集諦滅諦道諦光明。是故諸比丘欲求光明者。當求苦集滅道光明。又人有七色。云何為七。有人金色。有人火色。有人青色。有人黃色。有人赤色。有人黑色。有諸天阿須倫。有七色亦復如是。

The Dīrghāgama also states: The Buddha told the bhikṣus: 'The brightness of a firefly is not equal to the brightness of an oil lamp or candle. The brightness of an oil lamp or candle is not equal to that of a torch. The brightness of a torch is not equal to that of a bonfire. The brightness of a bonfire is not equal to that of the Four Heavenly Kings. The palaces, garments, and bodily radiance of the Four Kings are not equal to those of the Trāyastriṃśa Heaven, and so on progressively up to the Akaniṣṭha Heaven, whose radiance is not equal to the radiance of Maheśvara. The radiance of Maheśvara is not equal to the Buddha's radiance. From the brightness of a firefly up to the Buddha's radiance, combining all that radiance is still not equal to the radiance of the truth of suffering, the truth of the origin, the truth of cessation, and the truth of the path. Therefore, bhikṣus, those who wish to seek radiance should seek the radiance of suffering, origin, cessation, and the path.' Furthermore, humans have seven colours. What are the seven? Some humans are golden-coloured; some are fire-coloured; some are blue-green; some are yellow; some are red; some are black; and likewise the devas and asuras also have seven colours.