Update spacing and background color for condition/suggestion.

- changed suggestion/condition and searchbox background color to
  #F2F2F2
- changed condition card background color to #F8F8F8
- removed Suggestion header
- reduced space above condition header/footer by 9dp

Fix: 63393599
Test: visual
Change-Id: I4317781c93e23c6d019928b9fe9af16177f81c07
Merged-In: I268934e3a573b542480c0b21dbab68b7217295b5

res/values/colors.xml

@@ -112,4 +112,8 @@
 
     <!-- The fallback color for tinting icons. Only used when colorControlNormal is unavailable -->
     <color name="fallback_tintColor">#89000000</color>
+
+    <!-- Suggestion/condition colors -->
+    <color name="suggestion_condition_background">#f2f2f2</color>
+    <color name="condition_card_background">#f8f8f8</color>
 </resources>

res/values/styles.xml

@@ -456,7 +456,7 @@
     </style>
 
     <style name="SuggestionConditionStyle">
-        <item name="android:background">@color/material_grey_300</item>
+        <item name="android:background">@color/suggestion_condition_background</item>
     </style>
 
     <style name="TextAppearance.SearchBar" parent="@android:style/TextAppearance.Material.Widget.Toolbar.Subtitle">