add style for rss pages fix #138

alternative_user_files/userContent_no_addons.css

@@ -932,6 +932,33 @@ url-prefix(https://discovery.addons.mozilla.org) {
     color: var(--in-content-page-color)!important
   }
 }
+@-moz-document regexp(".*\.(atom|rss)$") {
+  body,
+  html {
+    background-color: var(--in-content-page-background)!important;
+    color: var(--in-content-page-color)!important
+  }
+  h1 {
+    border-color: var(--in-content-box-border-color)!important;
+    color: var(--in-content-selected-text)!important
+  }
+  #feedBody,
+  #feedHeader {
+    background-color: var(--in-content-box-background)!important;
+    border-color: var(--in-content-box-border-color)!important;
+    color: var(--in-content-page-color)!important
+  }
+  *|:link {
+    color: var(--in-content-link-color)!important
+  }
+  #subscribeButton {
+    background: var(--in-content-page-background)!important;
+    color: var(--in-content-page-color)!important;
+    border: 1px solid;
+    border-color: var(--in-content-box-border-color)!important;
+    border-radius: 4px
+  }
+}
 @-moz-document url-prefix(view-source) {
   :root {
     background-color: var(--in-content-page-background)!important;

css/userContent-files/rss.css

@@ -0,0 +1,27 @@
+@-moz-document regexp(".*\.(atom|rss)$") {
+  body,
+  html {
+    background-color: var(--in-content-page-background)!important;
+    color: var(--in-content-page-color)!important
+  }
+  h1 {
+    border-color: var(--in-content-box-border-color)!important;
+    color: var(--in-content-selected-text)!important
+  }
+  #feedBody,
+  #feedHeader {
+    background-color: var(--in-content-box-background)!important;
+    border-color: var(--in-content-box-border-color)!important;
+    color: var(--in-content-page-color)!important
+  }
+  *|:link {
+    color: var(--in-content-link-color)!important
+  }
+  #subscribeButton {
+    background: var(--in-content-page-background)!important;
+    color: var(--in-content-page-color)!important;
+    border: 1px solid;
+    border-color: var(--in-content-box-border-color)!important;
+    border-radius: 4px
+  }
+}

userContent.css

@@ -932,6 +932,33 @@ url-prefix(https://discovery.addons.mozilla.org) {
     color: var(--in-content-page-color)!important
   }
 }
+@-moz-document regexp(".*\.(atom|rss)$") {
+  body,
+  html {
+    background-color: var(--in-content-page-background)!important;
+    color: var(--in-content-page-color)!important
+  }
+  h1 {
+    border-color: var(--in-content-box-border-color)!important;
+    color: var(--in-content-selected-text)!important
+  }
+  #feedBody,
+  #feedHeader {
+    background-color: var(--in-content-box-background)!important;
+    border-color: var(--in-content-box-border-color)!important;
+    color: var(--in-content-page-color)!important
+  }
+  *|:link {
+    color: var(--in-content-link-color)!important
+  }
+  #subscribeButton {
+    background: var(--in-content-page-background)!important;
+    color: var(--in-content-page-color)!important;
+    border: 1px solid;
+    border-color: var(--in-content-box-border-color)!important;
+    border-radius: 4px
+  }
+}
 @-moz-document url-prefix(view-source) {
   :root {
     background-color: var(--in-content-page-background)!important;

userContent_imports.css

@@ -10,6 +10,8 @@
 @import "css/userContent-files/pdf.css";
 @import "css/userContent-files/raw_githubusercontent.css";
 @import "css/userContent-files/view_source.css";
+@import "css/userContent-files/rss.css";
+
 
 
 /* Import Relevant webextension tweaks here