Unable to set the new App Tint Color options for App Shortcuts

I'm not sure they are available in the current betas and there is no documentation at the moment other than that part of the WWDC video. I also find it strange that these are plist keys when App Shortcuts / App Intents has been focussed on moving everything to swift. Maybe we will get these as some static vars on AppShortcutsProvider in a future beta instead of plist keys?

After a bit of help on Twitter, here's how to get this working:

1. Add the shortTitle and systemImageName parameters in your AppShortcut(). If none of your shortcuts have this, the coloured panel won't appear in Shortcuts app. The system image name is from SF Symbols.

2. Create colours in your main app's asset catalog (e.g. ShortcutsBackground1, ShortcutsBackground2 and ShortcutsForeground

3. Now add NSAppIconActionTintColorName and NSAppIconComplementingColorNames in your Info.plist. This needs to go within CFBundlePrimaryIcon.

For example:

<dict>
    .....
    <key>CFBundleIcons</key>
    <dict>
		<key>CFBundlePrimaryIcon</key>
		<dict>
            ....

			<key>NSAppIconActionTintColorName</key>
			<string>ShortcutsForeground</string>
			<key>NSAppIconComplementingColorNames</key>
			<array>
				<string>ShortcutsBackground1</string>
				<string>ShortcutsBackground2</string>
			</array>
		</dict>
    </dict>
</dict>

In case it helps, after hours struggling, I discovered that I had to kill the Shortcuts App for changes to take effect!