Changing the color of an icon in an interaction variant also changes the color on the base variant
DEMO VIDEO
this one is because that icon is a default value of a slot, and the slot value is the same between variants, you should be able to change this color for any content of this slot by styling the slot
in the video you did style the color of the slot to blue but it didn’t apply in 1:54, but that’s because the color of the default icon (the value of the slot) was set, overriding the color of the slot styling