Object missing color in compositor?

Hey, I’m trying to learn how to use the compositor (I’ve procrastinated long enough, lol). I followed a glow/blur tutorial, but my blurred object appears with no color for some reason. I compared my node setup with the tutorial and didn’t see any mistakes.
Any help would be appreciated. :slight_smile:

blend file: http://pasteall.org/blend/index.php?id=46034


Your problem is the third node from left, the Mix node, where you do an opaque (mix factor = 1.000) color overlay of the IndexOB/ID Mask over the rendered image. Problem is, that when it comes to color, the the IndexOB/ID Mask is either white (“true”) or black (“false”). So, in this case you’ll get a white square, which is then blurred and later added to the image.

This might work better:

https://dl.dropboxusercontent.com/u/27650383/24-03-2017%2006-41-02.png

The ID mask is blurred and is then used as a factor to “Screen” (“Add” might also work) a blurred version of the original image over itself. This also stops the glow from influencing the grey parts of the image (as in your file, where the grey also got lighter).

Thanks for the help, Ikari! :slight_smile: