diff --git a/css/leptonContent.css b/css/leptonContent.css
index 3529297b..f6465054 100644
--- a/css/leptonContent.css
+++ b/css/leptonContent.css
@@ -2266,6 +2266,25 @@
       background-image: url("../icons/performance.svg") !important;
     }
   }
+  /*= about:processes ==========================================================*/
+  @-moz-document url-prefix("about:support") {
+    #reset-box-button {
+      --in-content-focus-outline-color: var(--in-content-danger-button-background) !important;
+      background-color: var(--in-content-danger-button-background) !important;
+      color: var(--in-content-primary-button-text-color) !important;
+      border-color: var(--in-content-primary-button-border-color) !important;
+    }
+    #reset-box-button:enabled:hover {
+      background-color: var(--in-content-danger-button-background-hover) !important;
+      color: var(--in-content-primary-button-text-color-hover) !important;
+      border-color: var(--in-content-primary-button-border-hover) !important;
+    }
+    #reset-box-button:enabled:hover:active {
+      background-color: var(--in-content-danger-button-background-active) !important;
+      color: var(--in-content-primary-button-text-color-active) !important;
+      border-color: var(--in-content-primary-button-border-active) !important;
+    }
+  }
   /*= chrome://browser/content/places/places.xhtml =============================*/
   @-moz-document url("chrome://browser/content/places/places.xhtml")
   {
@@ -5786,6 +5805,7 @@
   /*= about:memory =============================================================*/
   /*= about:preferences ========================================================*/
   /*= about:processes ==========================================================*/
+  /*= about:processes ==========================================================*/
   /*= chrome://browser/content/places/places.xhtml =============================*/
 }
 @media (-moz-bool-pref: "userContent.page.proton") and (-moz-bool-pref: "userContent.page.field_border") and (prefers-reduced-motion: no-preference) {
@@ -5967,6 +5987,26 @@
     }
   }
 }
+@media (-moz-bool-pref: "userContent.page.proton") {
+  @-moz-document url-prefix("about:support") {
+    #reset-box-button {
+      --in-content-focus-outline-color: var(--in-content-danger-button-background) !important;
+      background-color: var(--in-content-danger-button-background) !important;
+      color: var(--in-content-primary-button-text-color) !important;
+      border-color: var(--in-content-primary-button-border-color) !important;
+    }
+    #reset-box-button:enabled:hover {
+      background-color: var(--in-content-danger-button-background-hover) !important;
+      color: var(--in-content-primary-button-text-color-hover) !important;
+      border-color: var(--in-content-primary-button-border-hover) !important;
+    }
+    #reset-box-button:enabled:hover:active {
+      background-color: var(--in-content-danger-button-background-active) !important;
+      color: var(--in-content-primary-button-text-color-active) !important;
+      border-color: var(--in-content-primary-button-border-active) !important;
+    }
+  }
+}
 @media (-moz-bool-pref: "userContent.page.proton") {
   @-moz-document url("chrome://browser/content/places/places.xhtml")
   {
diff --git a/css/leptonContentESR.css b/css/leptonContentESR.css
index a4b16d6c..52ce9250 100644
--- a/css/leptonContentESR.css
+++ b/css/leptonContentESR.css
@@ -2269,6 +2269,25 @@
       background-image: url("../icons/performance.svg") !important;
     }
   }
+  /*= about:processes ==========================================================*/
+  @-moz-document url-prefix("about:support") {
+    #reset-box-button {
+      --in-content-focus-outline-color: var(--in-content-danger-button-background) !important;
+      background-color: var(--in-content-danger-button-background) !important;
+      color: var(--in-content-primary-button-text-color) !important;
+      border-color: var(--in-content-primary-button-border-color) !important;
+    }
+    #reset-box-button:enabled:hover {
+      background-color: var(--in-content-danger-button-background-hover) !important;
+      color: var(--in-content-primary-button-text-color-hover) !important;
+      border-color: var(--in-content-primary-button-border-hover) !important;
+    }
+    #reset-box-button:enabled:hover:active {
+      background-color: var(--in-content-danger-button-background-active) !important;
+      color: var(--in-content-primary-button-text-color-active) !important;
+      border-color: var(--in-content-primary-button-border-active) !important;
+    }
+  }
   /*= chrome://browser/content/places/places.xhtml =============================*/
   @-moz-document url("chrome://browser/content/places/places.xhtml")
   {
diff --git a/src/contents/_proton_contents.scss b/src/contents/_proton_contents.scss
index 2a06c7a6..ca094ddc 100644
--- a/src/contents/_proton_contents.scss
+++ b/src/contents/_proton_contents.scss
@@ -32,5 +32,8 @@
 /*= about:processes ==========================================================*/
 @import "proton_contents/about_processes";
 
+/*= about:processes ==========================================================*/
+@import "proton_contents/about_others";
+
 /*= chrome://browser/content/places/places.xhtml =============================*/
 @import "../library/contents";
diff --git a/src/contents/proton_contents/_about_others.scss b/src/contents/proton_contents/_about_others.scss
new file mode 100644
index 00000000..e55a4768
--- /dev/null
+++ b/src/contents/proton_contents/_about_others.scss
@@ -0,0 +1,19 @@
+@include moz-document(url-prefix "about:support") {
+  #reset-box-button {
+    --in-content-focus-outline-color: var(--in-content-danger-button-background) !important;
+    background-color: var(--in-content-danger-button-background) !important;
+    color: var(--in-content-primary-button-text-color) !important;
+    border-color: var(--in-content-primary-button-border-color) !important;
+
+    &:enabled:hover {
+      background-color: var(--in-content-danger-button-background-hover) !important;
+      color: var(--in-content-primary-button-text-color-hover) !important;
+      border-color: var(--in-content-primary-button-border-hover) !important;
+    }
+    &:enabled:hover:active {
+      background-color: var(--in-content-danger-button-background-active) !important;
+      color: var(--in-content-primary-button-text-color-active) !important;
+      border-color: var(--in-content-primary-button-border-active) !important;
+    }
+  }
+}