Hey, fire, the HMHS Britannic's funnels were White Star Buff (the color of the lower half of Titanic's funnels), which was the ship's only indication of being owned by the company. The HTML color code for a fresh coat of this color, as believed by Ken Marschell (last name sp?) is #DAA06D, which is:
Red: 218
Green: 160
Blue: 109
So you get the right color
I say go ahead and finish the ship!