Yes, -GF is slightly blue in colour whereas -PW is White.
5082NL Glass Fascia, Key Input Unit, 2 Gang, Saturn Series, Rectangular
Catalogue Number: 5082NL
C-Bus Saturn Wall Switches, C-Bus Saturn Wall Switch, Glass Fascia, As well as White Glass fascia (-GF) and Pure White Glass fascia (-PW), Saturn is available as standard in Cream (-380), Black (-680) and Mid-Brown (-780), 2 Button, Glass Fascia.
Please see below link for more colour choices