call screen: fix buttons background

Change-Id: I2da7df666bb718ee87f1aaffddfdefcd10705f63
diff --git a/ui/Base.lproj/CallInConferenceVC.xib b/ui/Base.lproj/CallInConferenceVC.xib
index 7ec5a00..22d9bb7 100644
--- a/ui/Base.lproj/CallInConferenceVC.xib
+++ b/ui/Base.lproj/CallInConferenceVC.xib
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="17156" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="17701" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="17156"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="17701"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
@@ -65,7 +65,7 @@
                             </buttonCell>
                             <userDefinedRuntimeAttributes>
                                 <userDefinedRuntimeAttribute type="color" keyPath="bgColor">
-                                    <color key="value" red="0.94509803920000002" green="0.16078431369999999" blue="0.0" alpha="0.83999999999999997" colorSpace="calibratedRGB"/>
+                                    <color key="value" red="0.56416362519999996" green="0.10639867929999999" blue="0.12937241790000001" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
                                 </userDefinedRuntimeAttribute>
                                 <userDefinedRuntimeAttribute type="number" keyPath="imageInsets">
                                     <integer key="value" value="6"/>
@@ -122,6 +122,6 @@
         </customView>
     </objects>
     <resources>
-        <image name="ic_action_cancel" width="72" height="72"/>
+        <image name="ic_action_cancel" width="70" height="70"/>
     </resources>
 </document>