diff --git a/README.md b/README.md
index ef87d91..7bf8c2f 100644
--- a/README.md
+++ b/README.md
@@ -314,6 +314,7 @@ There are instructions on how to use these in the file they are located. Check `
 ```
 adwaitaGtkCss
 discordCss
+firefoxTheme
 tmTheme
 ```
 </details>
diff --git a/flake.nix b/flake.nix
index 04eb146..ddbd093 100644
--- a/flake.nix
+++ b/flake.nix
@@ -21,6 +21,7 @@
     in themeFull // {
       adwaitaGtkCss = (import ./templates/adwaitaGtkCss.nix) themeFull;
       discordCss    = (import ./templates/discordCss.nix)    themeFull;
+      firefoxTheme  = (import ./templates/firefoxTheme.nix)  themeFull;
       tmTheme       = (import ./templates/tmTheme.nix)       themeFull;
     };
   } // builtins.mapAttrs (name: self.custom) raw;
diff --git a/templates/firefoxTheme.nix b/templates/firefoxTheme.nix
new file mode 100644
index 0000000..cc7f28f
--- /dev/null
+++ b/templates/firefoxTheme.nix
@@ -0,0 +1,39 @@
+# I'm actually not sure how to apply this to Firefox
+# declaratively. Let me know if you ever find out.
+theme: with theme.withHashtag; ''
+{
+  "info": "${name} by ${author}",
+  "colors": {
+    "bookmark_text":              "${base05}",
+    "button_background_active":   "${base02}",
+    "button_background_hover":    "${base01}",
+    "frame":                      "${base01}",
+    "icons":                      "${base05}",
+    "icons_attention":            "${base0D}",
+    "ntp_background":             "${base00}",
+    "ntp_text":                   "${base05}",
+    "popup":                      "${base00}",
+    "popup_border":               "${base00}",
+    "popup_highlight":            "${base02}",
+    "popup_highlight_text":       "${base06}",
+    "popup_text":                 "${base05}",
+    "tab_background_separator":   "${base04}",
+    "tab_background_text":        "${base05}",
+    "tab_line":                   "${base0D}",
+    "tab_loading":                "${base0D}",
+    "tab_selected":               "${base00}",
+    "tab_text":                   "${base05}",
+    "toolbar":                    "${base00}",
+    "toolbar_bottom_separator":   "${base01}",
+    "toolbar_field":              "${base02}",
+    "toolbar_field_border":       "${base00}",
+    "toolbar_field_border_focus": "${base0D}",
+    "toolbar_field_focus":        "${base02}",
+    "toolbar_field_separator":    "${base04}",
+    "toolbar_field_text":         "${base06}",
+    "toolbar_field_text_focus":   "${base06}",
+    "toolbar_top_separator":      "${base01}",
+    "toolbar_vertical_separator": "${base01}"
+  }
+}
+''