Subtler border color

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

@@ -1067,7 +1067,7 @@ a.uppy-Dashboard-poweredBy {
 
 .uppy-Dashboard-actions {
   height: 55px;
-  border-top: 1px solid rgba($color-gray, 0.3);
+  border-top: 1px solid #eaeaea;
   display: flex;
   align-items: center;
   padding: 0 15px;
@@ -1161,7 +1161,7 @@ a.uppy-Dashboard-poweredBy {
   align-items: center;
   justify-content: center;
   flex-grow: 1;
-  border-bottom: 1px solid rgba($color-gray, 0.3);
+  border-bottom: 1px solid #eaeaea;
   background-color: lighten($color-gray, 40%); /* no !important */
   position: relative;
 }

packages/@uppy/provider-views/src/style.scss

@@ -99,7 +99,7 @@
 
 .uppy-ProviderBrowser-header {
   z-index: $zIndex-2;
-  border-bottom: 1px solid rgba($color-gray, 0.3);
+  border-bottom: 1px solid #eaeaea;
   position: relative;
 }
 
@@ -463,7 +463,7 @@
   align-items: center;
   background: $color-white;
   height: 65px;
-  border-top: 1px solid rgba($color-gray, 0.3);
+  border-top: 1px solid #eaeaea;
   padding: 0 15px;
 
   & button {