Well, OddE, if it's any consolation, I can go you one better. Yesterday, while shooting at Lake Louise, I pulled a similar stunt. Shooting both black and white (PanF Plus at E.I. 25) and color (E100VS at box speed), with the Blad, I shot half a roll of E100VS with the orange filter on the front of 250mm before realizing my mistake! Not only will half the roll of color be deep orange, it will also be overexposed! Oh well...
In low light levels, you might get something interesting! You might also try cross processing, which is interesting after using a color filter.
"Often moments come looking for us". - Robert Frank
"Make good art!" - Neil Gaiman
"...the heart and mind are the true lens of the camera". - Yousuf Karsh