What color should Anakin's Eta-2 be?

Trying to determine what color to use for Anakin's Eta-2... The modern sets all use light gray for his Eta-2 while using dark gray for his Delta-7B, despite the two looking pretty much the same color in-universe. To further complicate things, the most recent Obi-Wan Eta-2 is also light gray, despite being noticeably lighter than Anakin's in ROTS - it definitely looks like it was painted white at some point. Do folks think Obi-Wan's should be white and Anakin's should be light gray? Or Obi-Wan...