You can customize all colors and brushes for dark and light themes.

NOTE

All classes related to Theme Located in the HandyControl.Themes namespace.

Using HandyControl.Themes;

Define resources

Expand ThemeResources and use a ThemeDictionaries Then define ColorPresetResources in the ThemeDictionaries with the appropriate key

<hc:ThemeResources>
    <hc:ThemeResources.ThemeDictionaries>

        <ResourceDictionary x:Key="Light" hc:ThemeDictionary.Key="Light">
           <ResourceDictionary.MergedDictionaries>
                <hc:ColorPresetResources TargetTheme="Light" />
           </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>

        <ResourceDictionary x:Key="Dark" hc:ThemeDictionary.Key="Dark">
            <ResourceDictionary.MergedDictionaries>
                <hc:ColorPresetResources TargetTheme="Dark" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>

    </hc:ThemeResources.ThemeDictionaries>
</hc:ThemeResources>

Create Themes

Now it's time to create our own personalization theme.

• Create a folder and name it Preset.
• Create 2 more folders in this folder called Default and MyTheme

NOTE

You can choose other names for folders

• In each of these 2 folders, create 2 ResourcesDictionary named Light.xaml and Dark.xaml

So we have:

--Preset
  |
  --Default
    |
    --Light.xaml
    --Dark.xaml
  --MyTheme
    |
    --Light.xaml
    --Dark.xaml

NOTE

You can leave the dictionaries for the default folder blank, This is for when you want to clear your personalization and get back to normal

• Now open the MyTheme Light and Dark dictionary and Expand MergedDictionaries then define a ColorPaletteResources

Dark.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:hc="https://handyorg.github.io/handycontrol">
    <ResourceDictionary.MergedDictionaries>
        <hc:ColorPaletteResources
            TargetTheme="Dark"/>
    </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

Light.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:hc="https://handyorg.github.io/handycontrol">
    <ResourceDictionary.MergedDictionaries>
        <hc:ColorPaletteResources
            TargetTheme="Light"/>
    </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

NOTE

Be sure to set the TargetTheme to Dark for Dark theme and Light for Light theme

• Now it's time to set the colors and brushes

Dark.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:hc="https://handyorg.github.io/handycontrol">
    <ResourceDictionary.MergedDictionaries>
        <hc:ColorPaletteResources
            TargetTheme="Dark"
            PrimaryBrush="#326cf3"
            DangerColor="#db3340"/>
    </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

Light.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:hc="https://handyorg.github.io/handycontrol">
    <ResourceDictionary.MergedDictionaries>
        <hc:ColorPaletteResources
            TargetTheme="Light"
            PrimaryBrush="#2db84d"
            DangerColor="#7b1fa2"/>
    </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

Set Preset

In the end we have to set our Preset

PresetManager.Current.ColorPreset = new PresetManager.Preset { ColorPreset = @"Preset\MyTheme", AssemblyName = Assembly.GetExecutingAssembly().GetName().Name };

ColorPresetChanged Event

PresetManager.Current.ColorPresetChanged += OnColorPresetChanged;

private void OnColorPresetChanged(object sender, EventArgs e)
{

}