You'd have to fake it.
Replicate the light source object and make it unique (so that materials are not linked), that is select material and hit Make Unique icon.
Scale it to be slightly larger.
Make it a dummy (check "Set as Dummy" at  Modify tab).
Now the replicated object is emitting the light but is invisible.
Next, slide the emissive value for the original object all the way down until it appears to have a the correct tint.

So now your replicated emitter is hidden (light source), but the original is inside of it and appears to have a correct tint (and it should not block the light because it is inside of the light source).