I would like to request that color is defined in the blocks in a way that allows the user to select one of 2 color block options
you can add color by using a general color swatch selector like you have currently on most blocks
you can add an RGB block that allows color to be treated as variables.
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I feel like these two color options should be broken out as two color blocks that can be added onto the blocks as needed. Currently you have color broken out as three variables in some of the ui blocks but in none of the graphics blocks and this is limiting. What I am suggesting is all tools requiring color require the user to add on a color block and the color block can be one of these two types (color swatch, or RGB variables). I think this can help make the interface cleaner since you don't have to have all these redundant blocks but rather a single block with the option to select how color is to be defined. This gives the user way more programming options since they can opt to use a swatch when needed or to use RGB number values or variables if needed.
Also I think you need a list block to define the length of an array. It would also be great to have a block for list pop.