1. ColorSnapper v1 is lagging on OS X 10.11 El Capitain
  2. Picking from Adobe Photoshop or Illustrator results in wrong colors
  3. How can I delete colors from history

ColorSnapper v1 is lagging on OS X 10.11 El Capitain

The issue you are seeing is because Apple made massive changes to the graphics rendering engine (Metal) with the release of El Capitan. It brings performance improvements for applications but to take advantage of it, we would require to make some significant changes to the codebase of ColorSnapper 1, which was released back in 2011 and got supported for 5 different OSX versions.

With the release of ColorSnapper 2 we stopped development and support for ColorSnapper 1. At that time – beginning of 2015 – El Capitan wasn’t even announced. This means ColorSnapper 1 will no longer receive updates or bugfixes. You can try ColorSnapper 2 for 14 days for free — it’s faster and better in every way.

Picking from Adobe Photoshop or Illustrator results in wrong colors

ColorSnapper detects the monitor color profiles and converts to sRGB automatically to ensure consistent colors between display and your code. To do that, ColorSnapper 2 uses monitor color profile defined in System Preferences but it does not know anything about Adobe software, which has a custom color management.

Please make sure you disable color management for the document you’re picking color from.

How can I delete colors from history

We believe there is no need to delete colors from the history. It is a history after all. But if you still want to remove colors from the history for whatever reason, you could run this command in Terminal.app:

defaults delete com.koolesache.ColorSnapper2 HistoryColors

Warning! This will delete all history items and it is not undoable.