Hi, there's Helens Olive Matt/Soft Red
Reduction or Oxidation
Nephelene Syenite 75
Copper Oxide 2
Comments: Cone 5-6 (electric kiln, oxidation) gives Olive Matt; Cone 9 (electric kiln, oxidation) gives Green/Orange Gloss; Cone 9 (gas kiln reduction) gives Soft Red Gloss.
You could try lowering the copper as it might be a bit dark.