Subtle horizontal ruler colors

packages/@uppy/dashboard/src/style.scss

@@ -370,7 +370,7 @@
   justify-content: space-between;
   height: 40px;
   width: 100%;
-  border-bottom: 1px solid rgba($color-gray, 0.3);
+  border-bottom: 1px solid #eaeaea;
   z-index: $zIndex-4;
   background-color: $color-almost-white;
   padding: 0 10px;

packages/@uppy/status-bar/src/style.scss

@@ -53,7 +53,7 @@
 .uppy-StatusBar:not([aria-hidden=true]).is-waiting {
   background-color: $color-white;
   height: 65px;
-  border-top: 1px solid rgba($color-gray, 0.3);
+  border-top: 1px solid #eaeaea;
 }
 
 .uppy-StatusBar-progress {