Arabic

ˀabyaḍ- - white (Lane 282)

may be internally derived from bayḍ- ‘egg’; it is also tempting to compare it to Gez. beṣā, Amh. bəč̣a ‘yellow’

PCS
*byṣ̂ - to be white, bright, yellow (Kogan 2015: 175)
see also *bayṣ̂-at- - ‘egg’