README.md

Custom Avalonia Themes developed by Devolutions

Linux Theme [Work in Progress]

This theme is currently based on Avalonia.Themes.Fluent, both as a fallback for any controls not covered yet and as starting point for our style definitions targeting a Linux look similar to Ubuntu’s default “Yaru” GTK theme..

While we are prioritizing controls for Devolutions Remote Desktop Manager, we welcome contributions from the Avalonia community to add more controls.

• Installation
• Styled Controls
  • Available in the current build
    • ComboBox
      • ComboBoxItem
  • 🚧 In progress ...
    • Dark mode support
  • 🔮 Next on the road map ...

Installation

Avalonia 12 required. Packages 2026.6.17-avalonia12 and later require Avalonia 12. The last stable release compatible with Avalonia 11 is 2026.6.16.

Install the Devolutions.AvaloniaTheme.Linux package via NuGet:

Install-Package Devolutions.AvaloniaTheme.Linux

or .NET

dotnet add package Devolutions.AvaloniaTheme.Linux

In your App.axaml, replace the existing theme (e.g. <FluentTheme /> or <SimpleTheme />) with the Linux theme:

<Application ...>
  <Application.Styles>
     <DevolutionsLinuxYaruTheme />
  </Application.Styles>
</Application>

Styled Controls

Below are some screenshots from the SampleApp test and demo pages - feel free to check out the code there for more detailed usage examples. For an always up-to-date visual reference you can also browse the baseline screenshots.

	AdornerLayer
	AutoCompleteBox
	Button
	ButtonSpinner
	Calendar
	CalendarButton
	CalendarDatePicker
	CalendarDayButton
	CalendarItem
	CaptionButtons
	Carousel
	CheckBox
✅	ComboBox ComboBoxItem
	ContextMenu
	DataGrid
	DataValidationErrors
	DatePicker
	DateTimePickerShared
	DropDownButton
	EmbeddableControlRoot
	Expander
	FluentControls
	FlyoutPresenter
	GridSplitter
	HeaderedContentControl
	HyperlinkButton
	ItemsControl
	Label
	ListBox
	ListBoxItem
	ManagedFileChooser
	Menu
	MenuFlyoutPresenter
	MenuItem
	MenuScrollViewer
	NotificationCard
	NumericUpDown
	OverlayPopupHost
	PathIcon
	PopupRoot
	ProgressBar
	RadioButton
	RefreshContainer
	RefreshVisualizer
	RepeatButton
	ScrollViewer ScrollBar
	SelectableTextBlock
	Separator
	Slider
	SplitButton
	SplitView
	TabControl TabItem
	TabStrip
	TabStripItem
	TextBox
	TextSelectionHandle
	ThemeVariantScope
	TimePicker
	TitleBar
	ToggleButton
	ToggleSwitch
	ToolTip
	TransitioningContentControl
	TreeView TreeViewItem
	Window
	WindowNotificationManager