You are incredibly mistaken.
Color of a light has absolutely nothing to do with its contrast characteristics. If it did, we wouldn't be able to create soft blue light as well as soft red light, hard blue light as well as hard red light.
An orange filter on the lens does absolutely nothing to increase or decrease contrast. It will filter out the complimentary colors of light, nothing more. This will darken those colors on black and white film. On color film, it will remove blue light form the image, tinting the scene orange.
No, nothing in my last sentence is switched around. If you have trouble lighting with contrast, it is no fault of the fixtures.
Go test your theory, then come back and report. I have, and that is why I am saying what I am saying.
On black and white film, a hot light and a flash will have different contrasts, although slightly, as I said. Of course a filter does what you say it does. We are talking about studio portraits on black and white film here. Find me a real studio portrait application on black and white film (without painted faces) in which an orange filter does not increase contrast on the model's face, however. I never said you can't create different qualities of light using different colors. I said that warmer light will make the pix in question more contrasty due to the film's color response. I am not talking about a major change here. Read my previous post to see this (the first I made in the thread).
I also used the word "inherently", meaning without modification. If you read my earlier post, you see that I make the same point you do about flashes and tungsten lamps being indiscernible for the most part.
I didn't say anywhere that I have trouble with flash or tungsten lamps creating too much contrast. It was Jim Noel who said that flashes are higher in contrast. I said in response that hot lights actually are. You are right in saying that this was stated incorrectly. It is not the LIGHTS that are more contrasty, but the NEGATIVES shot in that light.
And yes, you did have something switched in your post. I told you simply to inform you to edit the change, which you did. You are not wrong. You just got a word mixed up. Then you changed it, denied it, and gave me attitude for suggesting that it had been switched. You stated that "If you have trouble with strobes producing too-high contrast, you need to flag off the spill better; it's bouncing around your studio and lowering contrast."
We don't really disagree if you read my earlier post. Just forget the attitude and relax. We are in agreement for the most part. It would also be a good idea to follow standard Internet etiquette and read the entire post before responding, especially if you are as of yet a newish user.