The hearth is "supposed to be" warm as was the hearth in a log cabin so red has been traditional. Since you are using browns and cream, I believe I would use a darker red that has a hint of brown in the dye. I suggest you put several test groups together and leave them on the guest bed for a day or two to walk by. See which one pleases you most. It may be that your browns tend to the red or to the gold and that may let you know which hearth is most pleasing.
Nix the black--the fire in the hearth went out! Need a bit of a spark.