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Night Mode

In some lighting conditions, “night mode” (white text on dark grey) is easier to read or at least to give your eyes a needed break for a few minutes. Logos does not have a native “night mode,” but you can enable one for your operating system. F.lux is available for Windows, OS X, iOS, Linux, and Android. Reviews: PC World and Sleep Junkies; F.lux also has a Darkroom color effect with black background and red foreground.

Windows Vista or Windows 7

Windows “Aero” must be enabled. Also, “Magnifier” - a standard Windows feature – must be installed. Unless you have specifically disabled these, both should be enabled already.

  1. Open the Start menu, click All Programs, click Accessories, click Ease of Access, and click Magnifier.
    1. (Alternatively, you can start typing “Magnifier” in the text box in the Start Menu and it will appear.)
  2. By default, Magnifier should open with a zoom of 200x. A small Magnifier control window will open, as well.
    1. If only a magnifying glass appears on your screen, click the lens to expand it to the Magnifier control window.
    2. If nothing appears, click the new Magnifier button on your taskbar (it looks like a computer screen with a magnifying glass) to show the control window.
  3. Press the large MINUS on the Magnifier control window to reduce the zoom to 100% (assuming you do not want any level of zoom).
  4. Click the gear icon on the control window to open Magnifier Options.
  5. Check “Turn on color inversion” in Magnifier Options and click OK.
  6. Minimize Magnifier (you might have to click the magnifying glass to get the control window again).
  7. To make a permanent “Night Mode” button on your taskbar:
    1. Right-click the Magnifier button on the taskbar (it looks like a computer screen with a magnifying glass).
    2. In the menu that appears, click “Pin this program to taskbar.”
    3. Drag it to move it wherever you would like it.

You now have a Night Mode button on your taskbar. There are several ways to return to regular mode. The easiest:

  1. Right-click the Magnifier button on your taskbar.
  2. Click “Close Window” in the menu that appears.

“Magnifier” has many keyboard shortcuts

Press this key To do this
Windows logo key + Plus Sign (+) or Minus Sign (-) Zoom in or out
Ctrl+Alt+Spacebar Preview the desktop in full-screen mode
Ctrl+Alt+F Switch to full-screen mode
Ctrl+Alt+L Switch to lens mode
Ctrl+Alt+D Switch to docked mode
Ctrl+Alt+I Invert colors
Ctrl+Alt+arrow keys Pan in the direction of the arrow keys
Ctrl+Alt+R Resize the lens
Windows logo key + Esc Exit Magnifier

Aero alternative is enabling High Contrast and use Windows Default for Resource Panel Background; see How Can I Change Colors: Background & Font?
Another Aero alternative is using Negative Screen
The negativescreen.conf can be customized: e.g. add Negative Green with +alt+F12
Negative Green=win+alt+F12
{ 0.0, -0.12, 0.0, 0.0, 0.0 }
{ 0.0, -0.32, 0.0, 0.0, 0.0 }
{ 0.0, -0.64, 0.0, 0.0, 0.0 }
{ 0.0, 0.0, 0.0, 1.0, 0.0 }
{ 0.0, 1.0, 0.0, 0.0, 1.0 }

# Comment out Negative Sepia & Negative Grayscale (by inserting # in first column)
# Negative Candle has Gold text with Red Scroll
Negative Candle=win+alt+F7
{ -0.3, -0.5, 0.0, 0.0, 0.0 }
{ -0.6, -0.3, 0.0, 0.0, 0.0 }
{ -0.1, -0.5, 0.0, 0.0, 0.0 }
{ 0.0, 0.0, 0.0, 1.0, 0.0 }
{ 1.0, 1.0, 0.0, 0.0, 1.0 }

# Negative Gold has Gold foreground on Black background
Negative Gold=win+alt+F8
{ -0.3, -0.3, 0.0, 0.0, 0.0 }
{ -0.6, -0.6, 0.0, 0.0, 0.0 }
{ -0.1, -0.1, 0.0, 0.0, 0.0 }
{ 0.0, 0.0, 0.0, 1.0, 0.0 }
{ 1.0, 1.0, 0.0, 0.0, 1.0 }

# Normal Color alternate for toggling Inversion +alt+N
Normal Color=win+alt+F12
{ 1, 0, 0, 0, 0 }
{ 0, 1, 0, 0, 0 }
{ 0, 0, 1, 0, 0 }
{ 0, 0, 0, 1, 0 }
{ 0, 0, 0, 0, 1 }

# Light Cyan overcast=win+alt+F12
# “Normal Color” alternative with Red color intensity reduction
{ 0.878, 0, 0, 0, 0 }
{ 0, 1, 0, 0, 0 }
{ 0, 0, 1, 0, 0 }
{ 0, 0, 0, 1, 0 }
{ 0, 0, 0, 0, 1 }

# Light Sepia overcast=win+alt+F12
# “Normal Color” alternative with Green and Blue color intensity reduction (reduce Blue twice as much as Green)
{ 1, 0, 0, 0, 0 }
{ 0, 0.92, 0, 0, 0 }
{ 0, 0, 0.84, 0, 0 }
{ 0, 0, 0, 1, 0 }
{ 0, 0, 0, 0, 1 }

# Light Yellow overcast=win+alt+F12
# “Normal Color” alternative with Blue color intensity reduction
{ 1, 0, 0, 0, 0 }
{ 0, 1, 0, 0, 0 }
{ 0, 0, 0.84, 0, 0 }
{ 0, 0, 0, 1, 0 }
{ 0, 0, 0, 0, 1 }

Forum thread Sepia Background capability for all tools/guides/interactives etc. has screen shots showing Light Sepia and Light Yellow overcasts.

# Alternate for Smart Inversion Alt 1 with bit less color saturation
{ 0.8, -0.9, -0.9, 0, 0 }
{ -0.9, 0.8, -0.9, 0, 0 }
{ -0.9, -0.9, 0.8, 0, 0 }
{ 0.0, 0.0, 0.0, 1, 0 }
{ 1.0, 1.0, 1.0, 0, 1 }

Mac

Night Mode is quite easy on a Mac:

  1. Press Ctrl-Opt-Cmd-8 to Invert screen colors
    1. If nothing happens, Open System Preferences
    2. Check Keyboard shortcuts for Accessibility – Invert colors

Alternative is using System Preferences to Invert color:

  1. Open System Preferences
    1. Click Accessibility
    2. Click Display
    3. Click Invert Colors


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