Change the button color at setting modal

browser/main/modals/PreferencesModal/ConfigTab.styl

@@ -38,7 +38,7 @@
   width 400px
   font-size $tab--button-font-size
   border solid 1px $border-color
-  border-radius $tab--input-border-radius
+  border-radius 2px
   padding 0 5px
   &:disabled
     background-color $ui-input--disabled-backgroundColor
@@ -64,7 +64,7 @@
 .group-control-leftButton
   colorDefaultButton()
   border none
-  border-radius 5px
+  border-radius 2px
   font-size $tab--button-font-size
   height $tab--button-height
   padding 0 15px
@@ -74,17 +74,17 @@
   float right
   colorPrimaryButton()
   border none
-  border-radius $tab--button-border-radius
+  border-radius 2px
   font-size $tab--button-font-size
-  height $tab--button-height
-  padding 0 15px
+  height 35px
+  width 100px
   margin-right 10px
 
 .group-hint
   border $ui-border
   padding 10px 15px
   margin 15px 0
-  border-radius 5px
+  border-radius 2px
   background-color $ui-backgroundColor
   color $ui-inactive-text-color
   ul

browser/main/modals/PreferencesModal/StoragesTab.styl

@@ -36,7 +36,7 @@
   border $ui-border
   colorDefaultButton()
   font-size $tab--button-font-size
-  border-radius $tab--button-border-radius
+  border-radius 2px
 
 .addStorage
   margin-bottom 15px

browser/main/modals/PreferencesModal/UiTab.js

@@ -253,7 +253,7 @@ class UiTab extends React.Component {
             <button styleName='group-control-rightButton'
               onClick={(e) => this.handleSaveUIClick(e)}
             >
-              Save UI Config
+              Save
             </button>
           </div>
         </div>