Proto-MSA

*ˁpr - to be red (Bulakh 2004: 274–276; Kogan 2011: 189, 199)

PS
*ˁapar- - soil; soft surface of the earth used for cultivation and as a building material (soil, dust) (Fronzaroli 1968: 270, 287; HALOT 861, Kogan 2011: 189; Kogan 2015: 530)

Mehri
ˀōfər - red, red-brown, brown (ML 14)
Jibbali
ˁɔ́fər - red (JL 8)
Soqotri
ˁáfer - red (LS 320; CSOL I 487; CSOL II 404)
Soqotri
aˁfírir - to become red (LS 320; CSOL II 404; CSOL III)