Hi Michael,
Thanks so much for your report and sorry for the late reply!
I tried to follow your video, but generally it is enormously difficult when the videos have no sound. It would be great if you explain what you are doing in the future, no matter how good or bad your English is. That would make it much easier to follow what you expect etc… Thanks for your understanding 
And now to the problem: As far as I have seen, you have not edited and saved the respective color, but only entered the variable name. This is not saved automatically. Please have a look at this video from another thread, it might help:
@mikestott Welcome to the forum! Where and how did you define the colors?
Best regards,
timmse