With node-gyp's colored error messages*, some bits end up invisible in Konsole:
I'm using Kubuntu 16.04.1 LTS, running under VMware Workstation with 3D acceleration enabled. If I copy/paste the text from Konsole to somewhere else, the invisible bits are revealed, which suggests this is a rendering issue.
Note that the glitched bits stay black even when selected, and end up looking like redaction bars:
* I believe node-gyp is running GCC behind the scenes, but I'm not totally sure.