Can't change colors in the Gamut Mapping Playground

[lloydk]

The Gamut Mapping Playground app throws exceptions on initial page load and when trying to change the color.

Firefox Console Output

[facelessuser]

Yeah, just stumbled on this problem as well when testing out #7.

vue.esm-browser.js:1793 Uncaught TypeError: Cannot read properties of null (reading 'color')
    at onColorchange (eval at compileToFunction (vue.esm-browser.js:1:1), <anonymous>:47:70)
    at callWithErrorHandling (vue.esm-browser.js:1730:22)
    at callWithAsyncErrorHandling (vue.esm-browser.js:1739:21)
    at ColorSwatch.invoker (vue.esm-browser.js:9652:13)
    at Props.firePropChangedEvent (Props.js:138:12)
    at ColorSwatch.init (defineEvents.js:121:18)
    at hooks.js:57:13
    at Array.forEach (<anonymous>)
    at Hooks.run (hooks.js:56:14)
    at ColorSwatch.connectedCallback (Element.js:33:27)