It's a pitty that the Hasegawa VF-1S Strike Battroid kit has no decals for a 1S Max (OK: it is logical since he was never seen flying a strike). The instructions clearly shows a black shield for Roy and a red one for Hikaru and Hase kits are officially sanctioned AFAIK.
Dont, forget, the 1/48 Hikaru 1S has a red heatshield, too, so that's more evidence.
There is no such thing as a 1/48 Hikaru 1S. If you have seen one, it was a fan creation.