diff --git a/mate/256x256/apps/accessories-calculator.png b/mate/256x256/apps/accessories-calculator.png
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+++ b/mate/256x256/apps/accessories-calculator.png

diff --git a/mate/256x256/apps/accessories-character-map.png b/mate/256x256/apps/accessories-character-map.png
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index 0000000..39c88c7
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+++ b/mate/256x256/apps/accessories-character-map.png

diff --git a/mate/256x256/apps/accessories-dictionary.png b/mate/256x256/apps/accessories-dictionary.png
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+++ b/mate/256x256/apps/accessories-dictionary.png

diff --git a/mate/256x256/apps/accessories-text-editor.png b/mate/256x256/apps/accessories-text-editor.png
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+++ b/mate/256x256/apps/accessories-text-editor.png

diff --git a/mate/256x256/apps/applets-screenshooter.png b/mate/256x256/apps/applets-screenshooter.png
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+++ b/mate/256x256/apps/applets-screenshooter.png

diff --git a/mate/256x256/apps/help-browser.png b/mate/256x256/apps/help-browser.png
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+++ b/mate/256x256/apps/help-browser.png

diff --git a/mate/256x256/apps/preferences-desktop-accessibility.png b/mate/256x256/apps/preferences-desktop-accessibility.png
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index 0000000..b55d5e2
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+++ b/mate/256x256/apps/preferences-desktop-accessibility.png

diff --git a/mate/256x256/apps/preferences-desktop-display.png b/mate/256x256/apps/preferences-desktop-display.png
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diff --git a/mate/256x256/apps/preferences-desktop-font.png b/mate/256x256/apps/preferences-desktop-font.png
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index 0000000..7b2298f
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+++ b/mate/256x256/apps/preferences-desktop-font.png

diff --git a/mate/256x256/apps/preferences-desktop-keyboard-shortcuts.png b/mate/256x256/apps/preferences-desktop-keyboard-shortcuts.png
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+++ b/mate/256x256/apps/preferences-desktop-keyboard-shortcuts.png

diff --git a/mate/256x256/apps/preferences-desktop-keyboard.png b/mate/256x256/apps/preferences-desktop-keyboard.png
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+++ b/mate/256x256/apps/preferences-desktop-keyboard.png

diff --git a/mate/256x256/apps/preferences-desktop-locale.png b/mate/256x256/apps/preferences-desktop-locale.png
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+++ b/mate/256x256/apps/preferences-desktop-locale.png

diff --git a/mate/256x256/apps/preferences-desktop-remote-desktop.png b/mate/256x256/apps/preferences-desktop-remote-desktop.png
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index 0000000..6650dc6
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+++ b/mate/256x256/apps/preferences-desktop-remote-desktop.png

diff --git a/mate/256x256/apps/preferences-desktop-screensaver.png b/mate/256x256/apps/preferences-desktop-screensaver.png
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index 0000000..fa0ae45
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+++ b/mate/256x256/apps/preferences-desktop-screensaver.png

diff --git a/mate/256x256/apps/preferences-desktop-theme.png b/mate/256x256/apps/preferences-desktop-theme.png
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+++ b/mate/256x256/apps/preferences-desktop-theme.png

diff --git a/mate/256x256/apps/preferences-desktop-wallpaper.png b/mate/256x256/apps/preferences-desktop-wallpaper.png
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index 0000000..6273736
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+++ b/mate/256x256/apps/preferences-desktop-wallpaper.png

diff --git a/mate/256x256/apps/system-file-manager.png b/mate/256x256/apps/system-file-manager.png
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index 0000000..7d52d91
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+++ b/mate/256x256/apps/system-file-manager.png

diff --git a/mate/256x256/apps/system-software-install.png b/mate/256x256/apps/system-software-install.png
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+++ b/mate/256x256/apps/system-software-install.png

diff --git a/mate/256x256/apps/system-software-update.png b/mate/256x256/apps/system-software-update.png
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+++ b/mate/256x256/apps/system-software-update.png

diff --git a/mate/256x256/apps/system-users.png b/mate/256x256/apps/system-users.png
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+++ b/mate/256x256/apps/system-users.png

diff --git a/mate/256x256/apps/user-info.png b/mate/256x256/apps/user-info.png
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+++ b/mate/256x256/apps/user-info.png

diff --git a/mate/256x256/apps/utilities-system-monitor.png b/mate/256x256/apps/utilities-system-monitor.png
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index 0000000..a3a3437
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+++ b/mate/256x256/apps/utilities-system-monitor.png

diff --git a/mate/256x256/apps/utilities-terminal.png b/mate/256x256/apps/utilities-terminal.png
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index 0000000..f4c0200
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+++ b/mate/256x256/apps/utilities-terminal.png

diff --git a/mate/256x256/apps/web-browser.png b/mate/256x256/apps/web-browser.png
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+++ b/mate/256x256/apps/web-browser.png