fix(theming): Adjust status colors to be also accessible on blurry background

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

apps/theming/css/default.css

@@ -21,17 +21,17 @@
   /** @deprecated use `--color-text-maxcontrast` instead */
   --color-text-lighter: var(--color-text-maxcontrast);
   --color-scrollbar: rgba(34,34,34, .15);
-  --color-error: #d91812;
-  --color-error-rgb: 217,24,18;
-  --color-error-hover: #dd342f;
-  --color-error-text: #c61610;
-  --color-warning: #b88100;
-  --color-warning-rgb: 184,129,0;
-  --color-warning-hover: #c69a32;
-  --color-warning-text: #855d00;
+  --color-error: #C00505;
+  --color-error-rgb: 192,5,5;
+  --color-error-hover: #c72424;
+  --color-error-text: #C00505;
+  --color-warning: #A37200;
+  --color-warning-rgb: 163,114,0;
+  --color-warning-hover: #8a6000;
+  --color-warning-text: #7f5900;
   --color-success: #2d7b41;
   --color-success-rgb: 45,123,65;
-  --color-success-hover: #448955;
+  --color-success-hover: #428854;
   --color-success-text: #286c39;
   --color-info: #0071ad;
   --color-info-rgb: 0,113,173;

apps/theming/lib/Themes/DefaultTheme.php

@@ -111,8 +111,8 @@ class DefaultTheme implements ITheme {
 		$colorBoxShadow = $this->util->darken($colorMainBackground, 70);
 		$colorBoxShadowRGB = join(',', $this->util->hexToRGB($colorBoxShadow));
 
-		$colorError = '#d91812';
-		$colorWarning = '#b88100';
+		$colorError = '#C00505';
+		$colorWarning = '#A37200';
 		$colorSuccess = '#2d7b41';
 		$colorInfo = '#0071ad';
 
@@ -148,14 +148,14 @@ class DefaultTheme implements ITheme {
 			'--color-error' => $colorError,
 			'--color-error-rgb' => join(',', $this->util->hexToRGB($colorError)),
 			'--color-error-hover' => $this->util->mix($colorError, $colorMainBackground, 75),
-			'--color-error-text' => $this->util->darken($colorError, 4),
+			'--color-error-text' => $colorError,
 			'--color-warning' => $colorWarning,
 			'--color-warning-rgb' => join(',', $this->util->hexToRGB($colorWarning)),
-			'--color-warning-hover' => $this->util->mix($colorWarning, $colorMainBackground, 60),
-			'--color-warning-text' => $this->util->darken($colorWarning, 10),
+			'--color-warning-hover' => $this->util->darken($colorWarning, 5),
+			'--color-warning-text' => $this->util->darken($colorWarning, 7),
 			'--color-success' => $colorSuccess,
 			'--color-success-rgb' => join(',', $this->util->hexToRGB($colorSuccess)),
-			'--color-success-hover' => $this->util->mix($colorSuccess, $colorMainBackground, 78),
+			'--color-success-hover' => $this->util->mix($colorSuccess, $colorMainBackground, 80),
 			'--color-success-text' => $this->util->darken($colorSuccess, 4),
 			'--color-info' => $colorInfo,
 			'--color-info-rgb' => join(',', $this->util->hexToRGB($colorInfo)),

apps/theming/tests/Themes/AccessibleThemeTestCase.php

@@ -46,6 +46,26 @@ class AccessibleThemeTestCase extends TestCase {
 				],
 				3.0,
 			],
+			'status color elements on background' => [
+				[
+					'--color-error',
+					'--color-error-hover',
+					'--color-warning',
+					'--color-warning-hover',
+					'--color-info',
+					'--color-info-hover',
+					'--color-success',
+					'--color-success-hover',
+				],
+				[
+					'--color-main-background',
+					'--color-background-hover',
+					'--color-background-dark',
+					'--color-background-darker',
+					'--color-main-background-blur',
+				],
+				3.0,
+			],
 			'primary-element-text' => [
 				[
 					'--color-primary-element-text',
@@ -92,6 +112,21 @@ class AccessibleThemeTestCase extends TestCase {
 				],
 				4.5,
 			],
+			'status-text' => [
+				[
+					'--color-error-text',
+					'--color-warning-text',
+					'--color-success-text',
+					'--color-info-text',
+				],
+				[
+					'--color-main-background',
+					'--color-background-hover',
+					'--color-background-dark',
+					'--color-main-background-blur',
+				],
+				4.5,
+			],
 		];
 	}
 
@@ -108,7 +143,7 @@ class AccessibleThemeTestCase extends TestCase {
 		$variables = $this->theme->getCSSVariables();
 
 		// Blur effect does not work so we mockup the color - worst supported case is the default "clouds" background image (on dark themes the clouds with white color are bad on bright themes the primary color as sky is bad)
-		$variables['--color-main-background-blur'] = $this->util->mix($variables['--color-main-background'], $this->util->isBrightColor($variables['--color-main-background']) ? $variables['--color-primary'] : '#ffffff', 75);
+		$variables['--color-main-background-blur'] = $this->util->mix($variables['--color-main-background'], $this->util->isBrightColor($variables['--color-main-background']) ? '#000000' : '#ffffff', 75);
 
 		foreach ($backgroundColors as $background) {
 			$this->assertStringStartsWith('#', $variables[$background], 'Is not a plain color variable - consider to remove or fix this test');