Accent color:

- added `Component.accentColor`
- dark themes: changed threshold for contrast() from 39% down to 25% for better readability of text
- Demo: added "Default" accent color and changed "Blue" to lighter color

(issue #233)

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatDarkLaf.properties

@@ -35,7 +35,7 @@
 @background = #3c3f41
 @foreground = #bbb
 @selectionBackground = @accentSelectionBackground
-@selectionForeground = contrast(@selectionBackground,@background,@foreground,39%)
+@selectionForeground = contrast(@selectionBackground,@background,@foreground,25%)
 @selectionInactiveBackground = spin(saturate(shade(@selectionBackground,70%),20%),-15)
 @selectionInactiveForeground = @foreground
 @disabledText = #888
@@ -164,6 +164,7 @@ Component.disabledBorderColor = $Component.borderColor
 Component.focusedBorderColor = lighten($Component.focusColor,5%)
 Component.focusColor = @accentFocusColor
 Component.linkColor = @accentLinkColor
+Component.accentColor = if(@accentColor, @accentColor, @accentBaseColor)
 Component.grayFilter = -20,-70,100
 
 Component.error.borderColor = desaturate($Component.error.focusedBorderColor,25%)
@@ -242,7 +243,7 @@ PopupMenu.borderColor = #5e5e5e
 ProgressBar.background = #555
 ProgressBar.foreground = @accentSliderColor
 ProgressBar.selectionBackground = @foreground
-ProgressBar.selectionForeground = contrast($ProgressBar.foreground,@background,@foreground,39%)
+ProgressBar.selectionForeground = contrast($ProgressBar.foreground,@background,@foreground,25%)
 
 
 #---- RootPane ----

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLightLaf.properties

@@ -171,6 +171,7 @@ Component.disabledBorderColor = lighten($Component.borderColor,4%)
 Component.focusedBorderColor = shade($Component.focusColor,10%)
 Component.focusColor = @accentFocusColor
 Component.linkColor = @accentLinkColor
+Component.accentColor = if(@accentColor, @accentColor, @accentBaseColor)
 Component.grayFilter = 25,-25,100
 
 Component.error.borderColor = lighten(desaturate($Component.error.focusedBorderColor,20%),25%)

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DemoFrame.java

@@ -336,9 +336,12 @@ class DemoFrame
 	// flatlaf-demo/src/main/resources/com/formdev/flatlaf/demo/FlatLightLaf.properties and
 	// flatlaf-demo/src/main/resources/com/formdev/flatlaf/demo/FlatDarkLaf.properties
 	private static String[] accentColorKeys = {
-		"Demo.accent.blue", "Demo.accent.purple", "Demo.accent.red",
+		"Demo.accent.default", "Demo.accent.blue", "Demo.accent.purple", "Demo.accent.red",
 		"Demo.accent.orange", "Demo.accent.yellow", "Demo.accent.green",
 	};
+	private static String[] accentColorNames = {
+		"Default", "Blue", "Purple", "Red", "Orange", "Yellow", "Green",
+	};
 	private final JToggleButton[] accentColorButtons = new JToggleButton[accentColorKeys.length];
 	private JLabel accentColorLabel;
 
@@ -351,6 +354,7 @@ class DemoFrame
 		ButtonGroup group = new ButtonGroup();
 		for( int i = 0; i < accentColorButtons.length; i++ ) {
 			accentColorButtons[i] = new JToggleButton( new AccentColorIcon( accentColorKeys[i] ) );
+			accentColorButtons[i].setToolTipText( accentColorNames[i] );
 			accentColorButtons[i].addActionListener( this::accentColorChanged );
 			toolBar.add( accentColorButtons[i] );
 			group.add( accentColorButtons[i] );

flatlaf-demo/src/main/resources/com/formdev/flatlaf/demo/FlatDarkLaf.properties

@@ -16,9 +16,11 @@
 
 #---- Demo.accent ----
 
-Demo.accent.blue = #4B6EAF
+# accent colors from https://github.com/89netraM/SystemColors/blob/master/src/net/asberg/macos/AccentColor.java
+Demo.accent.default = #4B6EAF
+Demo.accent.blue = #0A84FF
 Demo.accent.purple = #BF5AF2
-Demo.accent.red  = #e81123
+Demo.accent.red = #FF453A
 Demo.accent.orange = #FF9F0A
 Demo.accent.yellow = #FFCC00
 Demo.accent.green = #32D74B

flatlaf-demo/src/main/resources/com/formdev/flatlaf/demo/FlatLightLaf.properties

@@ -16,7 +16,9 @@
 
 #---- Demo.accent ----
 
-Demo.accent.blue = #2675BF
+# accent colors from https://github.com/89netraM/SystemColors/blob/master/src/net/asberg/macos/AccentColor.java
+Demo.accent.default = #2675BF
+Demo.accent.blue = #007AFF
 Demo.accent.purple = #BF5AF2
 Demo.accent.red = #FF3B30
 Demo.accent.orange = #FF9500

flatlaf-testing/dumps/uidefaults/FlatDarkLaf_1.8.0_202.txt

@@ -216,6 +216,7 @@ ComboBoxUI                     com.formdev.flatlaf.ui.FlatComboBoxUI
 
 #---- Component ----
 
+Component.accentColor          #4b6eaf  HSL 219  40  49    javax.swing.plaf.ColorUIResource [UI]
 Component.arc                  5
 Component.arrowType            chevron
 Component.borderColor          #646464  HSL   0   0  39    javax.swing.plaf.ColorUIResource [UI]

flatlaf-testing/dumps/uidefaults/FlatLightLaf_1.8.0_202.txt

@@ -220,6 +220,7 @@ ComboBoxUI                     com.formdev.flatlaf.ui.FlatComboBoxUI
 
 #---- Component ----
 
+Component.accentColor          #2675bf  HSL 209  67  45    javax.swing.plaf.ColorUIResource [UI]
 Component.arc                  5
 Component.arrowType            chevron
 Component.borderColor          #c4c4c4  HSL   0   0  77    javax.swing.plaf.ColorUIResource [UI]

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLafUIKeys.txt

@@ -172,6 +172,7 @@ ComboBox.selectionBackground
 ComboBox.selectionForeground
 ComboBox.timeFactor
 ComboBoxUI
+Component.accentColor
 Component.arc
 Component.arrowType
 Component.borderColor