Keyestudio 4WD Manual page 233

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Move block"set B to 0"into"for index from 0 to 3...do"block,
Click B to choose R
Go to"Math"to drag block"pick random 0 to 10"into 0 box
Change 0 into 10, 10 into 255
Replicate block twice and place them into "for
index from 0 to 3...do"block.
Click R to select G and B
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