Well, I finally got around to installing my VBXE. As far as I know, there is no VBXE core that has NTSC colors for the palette by default. I imagine it's not too hard to update the core to contain a different palette, if one had the source.
Anyway, I believe Electron was the designer for the VBXE, and still retains rights to the core. Anybody know if he can be contacted to ask for an NTSC core? I don't even know if he speaks English....
I suppose you can load a new palette with software,
VBXE packages 2023-09-03 (MyDos, Sparta DOS X ATR-s included)
new core, GTIA + ROCKY Palette (rocky_real_atari2.act)
File: v1fx126a.rbf converted, HW:VBXE1, CFG name: "FX v1.26 LAOO PAL "
File: v1fx126r.rbf converted, HW:VBXE1, CFG name: "FX v1.26 RAMBO LAOO PAL "
File: v1g106a.rbf converted, HW:VBXE1, CFG name: "GTIA v1.06 LAOO PAL "
File: v1g106r.rbf converted, HW:VBXE1, CFG name: "GTIA v1.06 RAMBO LAOO PAL "
File: v2fx126a.rbf converted,