Hey, I wasn't sure where to post this but it's in relation to Mac controls. I use a 15" 2018 MacBook Pro with the iMac you can purchase the extended keyboard which includes the Number pad. However these can still be pricey so after searching for a cheaper alternative I discovered an app called Numpad. It's available on iOS app software and enables you to turn your phone into a Numeric Keyboard, allowing you to cycle through swatches using the app + key on the phone screen and change the wall view using the End key. The connection process is fairly simple and I followed a tutorial that was on Vimeo. You can just search Numpad. app on Google.
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