Fix export background color

Background color of the textarea in the settings export was not readable
in the dark theme when the value was invalid

options/export.css

@@ -9,5 +9,5 @@ html, body {
 	height: 95%;
 }
 #settings.invalid {
-	background-color: pink;
+	background-color: var(--input-error-background-color);
 }

releaseNotes.txt

@@ -6,7 +6,7 @@ Version 0.5.15:
 		- 
 	
 	fixes:
-		- 
+		- background color of the textarea in the settings export was not readable in the dark theme when the value was invalid
 	
 	known issues:
 		- if a data URL is blocked the page action button does not appear

themes/colorful/layout.css

@@ -1,6 +1,7 @@
 body {
 	--background-color: rgb(218, 244, 250);
 	--input-background-color: rgb(228, 253, 169);
+	--input-error-background-color: pink;
 	--text-color: rgb(102, 42, 34);
 	--link-color: rgb(5, 197, 188);
 	--button-background-image: linear-gradient(transparent 0%, rgba(255, 255, 255, 0.1) 100%);

themes/dark/layout.css

@@ -1,6 +1,7 @@
 body {
 	--background-color: rgb(74, 74, 79);
 	--input-background-color: rgb(53, 56, 54);
+	--input-error-background-color: rgb(92, 24, 24);
 	--text-color: rgb(249, 249, 250);
 	--link-color: lightblue;
 	--button-background-image: linear-gradient(transparent 0%, rgba(255, 255, 255, 0.1) 100%);

themes/default/layout.css

@@ -3,6 +3,7 @@ body {
 	--background-color: rgb(249, 250, 249);
 	--link-color: blue;
 	--input-background-color: rgb(255, 255, 255);
+	--input-error-background-color: pink;
 	--button-background-image: linear-gradient(transparent 0%, rgba(0, 0, 0, 0.1) 100%);
 	--stacked-inputs-border-color: rgb(185, 185, 185);
 	--stacked-inputs-focus-color: rgb(236, 237, 236);

themes/light/layout.css

@@ -1,6 +1,7 @@
 body {
 	--background-color: rgb(255, 255, 255);
 	--input-background-color: rgb(249, 250, 249);
+	--input-error-background-color: pink;
 	--text-color: rgb(12, 12, 13);
 	--link-color: blue;
 	--button-background-image: linear-gradient(transparent 0%, rgba(0, 0, 0, 0.1) 100%);