Example throws error: EACCES

[jlarmstrongiv]

> electron-color-picker-example@ start /Users/~/Downloads/…/electron-color-picker/example
> electron ./main.js

[main:ipc-task:color-picker] start
[main:ipc-task:color-picker] done { result: undefined,
  error:
   { Error: spawn /Users/~/Downloads/…/electron-color-picker/example/node_modules/electron-color-picker/library/darwin/mockingbot-color-picker.app/Contents/MacOS/ColorPicker EACCES
       at Process.ChildProcess._handle.onexit (internal/child_process.js:246:19)
       at onErrorNT (internal/child_process.js:429:16)
       at processTicksAndRejections (internal/process/task_queues.js:81:17)
     errno: 'EACCES',
     code: 'EACCES',
     syscall:
      'spawn /Users/~/Downloads/…/electron-color-picker/example/node_modules/electron-color-picker/library/darwin/mockingbot-color-picker.app/Contents/MacOS/ColorPicker',
     path:
      '/Users/~/Downloads/…/electron-color-picker/example/node_modules/electron-color-picker/library/darwin/mockingbot-color-picker.app/Contents/MacOS/ColorPicker',
     spawnargs: [],
     cmd:
      '/Users/~/Downloads/…/electron-color-picker/example/node_modules/electron-color-picker/library/darwin/mockingbot-color-picker.app/Contents/MacOS/ColorPicker' } }

Clicking the button more than once creates this error

[main:ipc-task:color-picker] done { result: undefined,
  error:
   Error: color picker already running!
       at exports.getColorHexRGB (/Users/~/Downloads/…/electron-color-picker/example/node_modules/electron-color-picker/library/index.js:6:46)
       at EventEmitter.<anonymous> (/Users/~/Downloads/…/electron-color-picker/example/main.js:20:37)
       at EventEmitter.emit (events.js:194:13)
       at WebContents.<anonymous> (/Users/~/Downloads/…/electron-color-picker/example/node_modules/electron/dist/Electron.app/Contents/Resources/electron.asar/browser/api/web-contents.js:390:13)
       at WebContents.emit (events.js:194:13) }

Following https://github.com/npm/npm/issues/17268 does not fix the issue. Using MacOS 10.14.5 with https://github.com/nodenv/nodenv node v11.13.0