If I open a CSS file which has hexa colors in it, after a couple of seconds, the Atom editor crashes. Keep Waiting doesn't help, it will popup again a minute later.
Sometimes after opening a single HTML/PHP causes the freezing as well.

No settings was changed in the package options, everything left default in pigments.

I'am using these plugins:

atom-bootstrap3
atom-html-preview
autoprefixer
browser-plus
editorconfig
emmet
file-icons
file-watcher
highlight-selected
minimap
minimap-cursorline
minimap-highlight-selected
pigments

Versions:

Atom    : 1.35.1
Electron: 2.0.18
Chrome  : 61.0.3163.100
Node    : 8.9.3

atom-pigments v0.40.2

But it's started with an earlier version which forced me to reinstall Atom, and try my packages installing one-by-one to figure out which one is causing issues. And it turned out this one. Of course this was the last one I installed...

Edit - some additional info:

• alternative package: highlight-colors
• installing a previous version (0.40.1) doesn't freeze - I'am using it without any problems
  apm install "pigments@0.40.1"
  (Tested on the latest Atom 1.35.1 x64 Windows 10)