I'm trying to gradually change the RGB value of the background but I don't know how to get just the Red or Green or Blue value from the RGB. In fact, I don't even know how to display the RGB number in a text object.
How do you get the individual RGB numbers so you can use them, or the store them in a variable?
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You can convert individual R,G and B channels into one number using rgb() expression, but as far as I know, there is no easy way to "extract" channels from the full rgb color. You can do this with these formulas:
b=(color % 256)
g=int(color/256) % 256
Also, check this plugin: