The Wearable Colorizer is a block added by Wearables. It is used to colorize Wearables' components. Right-clicking it will open it.
A component can be added to the block's one slot by left-clicking it into the black square or shift-clicking. Each component may have different sections which are listed and can be selected in the left. Each section of the component can have their color changed to the right, using RGB color sliders. The component can then be removed.