This bug was fixed in the package unity - 5.8.0-0ubuntu1

---------------
unity (5.8.0-0ubuntu1) precise-proposed; urgency=low

  * New upstream release.
    - New "push mouse offscreen" feature really difficult to get (LP: #923749)
    - unity-2d-panel crashed with SIGSEGV in
      unity::indicator::DBusIndicators::Impl::RequestSyncAll() (LP: #864737)
    - Pressing "Alt+Enter" causes compiz to crash in CompOption::value() from
      unity::UnityScreen::showLauncherKeyTerminate (LP: #960957)
    - SEGSIGV after unplugging external monitor (LP: #962693)
    - Background colorization should use a different heuristic (LP: #865239)
    - compiz+unity3d generates > 50 wakeups a second on idle system
      (LP: #917210)
    - [FFe, UIFe] HUD - The HUD does not respect launcher autohide or icon
      size settings (LP: #921506)
    - clicking on folders in the file lens does not open nautilus
      (LP: #921665)
    - No text inside multirange filters (LP: #927710)
    - can't alt-tab restore minimized uis which have an instance on another
      workspace (LP: #933397)
    - Ubuntu Software Center Unity launcher integration is not working
      (LP: #932280)
    - The line separator between the launcher and the dash is cleared when
      selecting a category (LP: #941082)
    - unity-panel-service crashed with SIGSEGV in g_hash_table_foreach()
      (LP: #937119)
    - Alt-F10 locks up Unity (LP: #948522)
    - multimonitor, launcher: Provide an option to display either a single
      launcher or a launcher on each display in a multi-monitor environment
      (LP: #950136)
    - multimonitor: Please give me a way to turn off sticky monitor edges
      (LP: #946104)
    - Unity 5.6: key bindings (such as Super) don't work on empty workspace or
      on slow/loaded systems (LP: #953089)
    - Alt+arrows keyboard shortcuts don't invoke Back and Forward navigation
      (LP: #953783)
    - HUD is sending 2 menu signals instead of 1 (LP: #956878)
    - 6th item of HUD not fully visible (LP: #957229)
    - HUD: seems to trigger operations more than once (LP: #960503)
    - Launcher gets always desaturated when using HUD on secondary monitor
      (LP: #961169)
    - [5.8 pre staging] launcher is displayed on the left screen, not the
      primary one (LP: #961281)
    - launcher icons do not re-saturate after dash is closed (LP: #961844)
    - Launcher shows arrows for applications on all workspaces (LP: #961977)
    - Dash - Implement overlay scrollbars in Dash (LP: #608124)
    - [UIFe] Dash - No message displayed when no results are returned in the
      Dash (LP: #711199)
    - Dash - "See more..." line should be base-aligned with section header
      (LP: #748101)
    - Dash - Missing category separator line in dash (LP: #850984)
    - Dash and Launcher - As soon as a user starts dragging a file from the
      Dash, there is a 'flicker' before the Launcher icons that are valid drop
      receptacles re-saturate (LP: #863230)
    - Dash - When multiple results have equal string match relevancy ranking,
      those with equal ranking should be then sorted by frequency of use.
      (LP: #871900)
    - Keyboard shortcut - F10 shortcut is used to show menu and this is wrong
      (LP: #878492)
    - Frozen double icon after launching and dragging at once (LP: #918753)
    - HUD is over gtk-menu (LP: #921305)
    - Files missing from Unity's POTFILES.in (LP: #923762)
    - Hidden menus are not really hidden (LP: #926330)
    - Need to bring back a "reveal border" option (LP: #927523)
    - Unity Panel lose shadow on changing the wallpaper (LP: #930271)
    - Incorrect item count in "See x more results" (LP: #934944)
    - Coverity PW.PARAMETER_HIDDEN - CID 10671 (LP: #938890)
    - Coverity PW.CAST_TO_QUALIFIED_TYPE - CID 10670 (LP: #938895)
    - [Shortcut overlay] Hardcoded value for switching ws (LP: #939517)
    - Dash - Font metrics and colors are wrong (LP: #942508)
    - Alt-tab switcher view should be pre-loaded to improve the startup time
      (LP: #942634)
    - Shortcut hint overlay should be hidden by Escape key (LP: #943422)
    - Dash/HUD - Spinner off-centre, looks drunk (LP: #943656)
    - Unable to restart lens which doesn't do global search (LP: #947301)
    - Launcher Switcher (Super+Tab) selection could be changed by arrow keys
      too (LP: #950404)
    - you have to release alt for alt + F10 working (LP: #943223)
    - magnifying glass is being overdrawn by text in searchbar  (LP: #955160)
    - hud searches don't update properly (LP: #956480)
    - Filters not working (LP: #961338)
    - Panel goes solid if switching from hud to dash or vice versa
      (LP: #962720)
    - compiz configuration options for unity are "fixme" (LP: #877382)
    - Launcher - When Launcher already has keyboard focus, Alt-F1 doesn't exit
      focus (LP: #885304)
    - Dash - dash is not closed with alt+f4 (LP: #891818)
    - Dash Home tooltip should use header capitalization (LP: #924354)
    - Typo in string 149: stoped (LP: #931382)
    - unity should not use dconf to store the average background colour
      (LP: #949277)
    - [UIFE] No HUD keybinding in the shortcut overlay (LP: #942515)
    - The hseparator is drawn also for the final dash category (LP: #955296)
  * debian/patches/series:
    - remove the distro patches in trunk right now
  * debian/control:
    - build-dep on latest nux,compiz and libcompizconfig for ABI breakage
 -- Didier Roche <[email protected]>   Fri, 23 Mar 2012 12:55:51 +0100

** Changed in: unity (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/865239

Title:
  Background colorization should use a different heuristic

Status in Ayatana Design:
  In Progress
Status in Unity:
  Fix Released
Status in “unity” package in Ubuntu:
  Fix Released

Bug description:
  NEW ITERATION:
  What is currently defective by design is the way unity is put on top of the 
background windows. It's a simple colored layer placed above stuff, with some 
nice blur to makes things more readable but it carries all the issues of 
washing out the resultant color of the dash, making it less crisp and vibrant.

  A nice trick is to play with the underlying background windows (the
  damage area/pixmap taken from Compiz), blend them with colors, and
  place the resultant below the dash.

  The steps are these:
  1) Take the underlying pixmap
  2) Blend this pixmap with a tweaked average color using OVERLAY operator
  3) Blur the pixmap (as we currently do)
  4) Put this new obtained pixmap below the dash
  5) At this point, the dash could be just a solid dark layer even with a lower 
opacity

  We might tweak the steps further, but the essential bits will remain
  the same because what will make the big difference is the blending
  described in step 2, that we are not doing now.

  ~~~

  ORIGINAL BUG (FIXED Cimi):
  The background of the BFB, Workspace Switcher, Lens, and Trash launcher icons 
tiles need to use a higher saturation of the average background colour of the 
wallpaper.

  Currently the colour is not as prominent as shown in the design,
  compare the attached image "unity_desktop_24_06_11_02.png" to the
  current implementation (when using the default wallpaper).   In the
  exact visual effect we are trying to achieve the colour takes on much
  more prominence.

  Desired resolution:
  - Increase the colour saturation in the BFB, Workspace Switcher, Lens, and 
Trash launcher icons

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