There is a predefined set of colors in the blocks palette

Set RGBA Color

As pictured below, the easiest way to set a specific color is using a text block with the syntax rgba(r,g,b,a)

Set RGB Color

If you want to select specific colors, use the RGB block below

Strangely, you can also create a color by blending two together

or you can choose one at random

Set HSV Color

A popular alternative to setting RGB color is to set Hue, Saturation and Value colors with the block below

Set Hex Color

You can use a Text block to include a hex value for your preferred color:

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