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# Kaleidoscope-TriColor
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The `TriColor` effect extension is a part of
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the [`LEDEffects`][plugin:ledeffects] library, not a stand-alone base library of
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its own. It is used to implement the effects in that library.
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[plugin:ledeffects]: LEDEffects.md
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It is a class that can be used to create LED effects that all follow a similar
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pattern: alphas and similar in one color; modifiers, special keys, and half the
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function keys in another, and `Esc` in a third (this latter being optional). If
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we have a color scheme that follows this pattern, the `TriColor` extension can
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make it a lot easier to implement it.
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## Using the extension
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Because the extension is part of the [`LEDEffects`][plugin:ledeffects] library,
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we need to include that header:
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```c++
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#include <Kaleidoscope-LEDEffects.h>
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```
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Then, we simply create a new instance of the `TriColor` class, with appropriate
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colors set for the constructor:
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```c++
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kaleidoscope::TriColor BlackAndWhiteEffect (CRGB(0x00, 0x00, 0x00),
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CRGB(0xff, 0xff, 0xff),
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CRGB(0x80, 0x80, 0x80));
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```
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The first argument is the base color, the second is for modifiers and special
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keys, the last one is for the `Esc` key. If the last one is omitted, the
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extension will use the modifier color for it.
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