I would like to do some smearing with jit.gl.pass on a mesh with colours but as soon as I turn it on the rendered image becomes very dark?

PassQuestion.zip

Hi there,
I would like to do some smearing with jit.gl.pass on a mesh with colours but as soon as I turn it on the rendered image becomes ve

jit·gl·pass-smear-problems

if applying an effect makes something dark, then apply an another effect to boost the brightness.

Here are the two screenshots when I enable and disable jit.gl.pass. As you can see one image is much brighter.

Ideally I don't want to have two effects on all the time as I would like to save my computer power so I would prefer to turn smear effect on only when I need it. Also I think that if some effect that shouldn't make things darker makes things darker then a better solution would be to fix it.

Would anyone else be so kind and try this out?

jit.gl.pass DISABLED.jpg

jit.gl.pass ENABLED.jpg

Here are the two screenshots when I enable and disable jit.gl.pass. As you can see one image is much brighter. 

Ideally I don't want to have two effects on all the time as I would like to save my computer power so I would prefer to turn smear effect on only when I need it. Also I think that if some effect that shouldn't make things darker makes things darker then a better solution would be to fix it. 

jit.gl.pass smear problems