Actually, I don't think it is OK. The problem is that AB blending is based on altitude. Bryce does NOT superimpose the texture and colour in the way that Poser does, it grades from texture A (bottom of object) to texture B (top) - as you see in the sphere (I've checked the manual). It doesn't look too wrong on Vicki's head largely because (I'm guessing) the eyes, eyebrows and lips are textured separately. Try the same trick on a whole body texture and you will get a different result. What you could try would be ABC blending, where texture C is just an alpha channel with alternate pixels black and white. But I think a better solution is to take the texture and tint it in Photoshop or similar and then apply it straight.