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I often use ctrl+alt+I and windows magnifier to invert the colors of my screen, to make bright windows easier to read.

The problem is that, eg, some windows are naturally dark and some are naturally light, and so I find myself often toggling the inversion as I switch between windows. I would like to be able to apply preferences on a per-window basis: eg, my email client is white-based and I would like to keep it always inverted.

Is there a way to accomplish this?

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1  
Duplicate: How to invert colors of a specific application or window only using Magnifier Judging by the fact that question has sat for 2+ years with no answers. I think the answer is "no". ;) – Ƭᴇcʜιᴇ007 Oct 11 '13 at 18:07
2  
Yeah, although he is asking specifically for a way with magnifier, whereas i will accept any solution including 3rd party software – Jonah Oct 11 '13 at 18:30

My workaround is to transform standard contrast of the entire screen into lower one. This way, window with inverted colors becomes more bearable.

  1. get NegativeScreen open source freeware

  2. open configuration file

  3. using copy-paste, add the following matrices:

# Based on Smart Inversion
Low Contrast si1=win+shift+alt+F5
{  0.3333333, -0.6666667, -0.6666667,  0.0000000,  0.0000000 }
{ -0.6666667,  0.3333333, -0.6666667,  0.0000000,  0.0000000 }
{ -0.6666667, -0.6666667,  0.3333333,  0.0000000,  0.0000000 }
{  0.0000000,  0.0000000,  0.0000000,  1.0000000,  0.0000000 }
{  1.2000000,  1.2000000,  1.2000000,  0.0000000,  1.0000000 }

# Based on Smart Inversion Alt 1: High saturation, good pure colors.
Low Contrast si2 (×*60% +30%)=win+shift+alt+F6
{  0.6, -0.6, -0.6,  0.0,  0.0 }
{ -0.6,  0.6, -0.6,  0.0,  0.0 }
{ -0.6, -0.6,  0.6,  0.0,  0.0 }
{  0.0,  0.0,  0.0,  1.0,  0.0 }
{  0.9,  0.9,  0.9,  0.0,  1.0 }
  1. you can play with them until brightness and sharpness adjustment fits your needs

Based on what you actually need, this could help you, because these adjustments can go beyond color adjustments reachable on standard LCD panels.

FYI the NegativeScreen tool is using your favorite magnifier functionality, but it can supply it with more color transformations than default simple inversion.

If eyesight is your main reason for asking this, you can also search for some decent e-ink display solution.

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