I was trying to get around the advantages of darkvision, so no, that would lose the point.

Realistically, I'm not sure how noticeable that difference would be. The real problem is when you see each other at great range, and suddenly there is a spot you can see way outside your darkvision range. But you don't need darkvision for that to happen.
I was also thinking of light sources that only emitted dim light.
In the end nothing came of it. I am trying the Darklight Lantern I posed in this thread instead, and it is in the starting inventory of the rogue and ninja. This may work... or not.