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Appearance

Customize how card tools look without changing what they display or how they behave.

You can change individual styles, make colors respond to entity values, reuse color palettes, or apply color filters to visual elements.

Choose what you want to change

I want to... Use
Change colors, fonts, strokes, opacity, or other visual properties Styling
Change colors based on an entity value or state Color stops
Reuse a predefined set of colors Palettes
Modify colors using filters Color filters

Styling

Use styles to control the normal appearance of a tool.

Depending on the tool, this can include properties such as:

  • fill and stroke colors
  • line width and opacity
  • font size and weight
  • text alignment
  • visibility and other SVG or CSS properties

Learn about styling

Color stops

Color stops make a tool change color according to an entity value or state.

They can be used for discrete ranges, smooth transitions, gradients, and other value-based coloring.

Learn about color stops

Palettes

Palettes provide reusable color collections.

Use them when several tools or cards should share the same colors without repeating those colors throughout the configuration.

Learn about palettes

Color filters

Color filters modify the rendered colors of supported visual elements.

They can be used for effects such as changing brightness, saturation, hue, or other color characteristics.

Learn about color filters

Appearance on tool pages

Each Card Tool page shows the appearance options that are most useful for that specific tool.

For example, the Circle page shows how to change its fill and outline, while the Icon page shows how to change its icon color.

The shared concepts themselves are documented here only once.