Hi Tyler,
Yes that should work. I did found one issue, the variable to Fixture-RGB does not work in firmware 1.07... Luckily the task DMX - RGB Control does work.
I created an example, I added the backup file as an attachment to this post.
In this file, a short press will trigger the last stored colour using a refresh (does not survive a reboot though) and a long press will scroll through the colours.
If you have any questions, feel free to ask!
Greetings,
Bootsy