(http://i.postimg.cc/CMcG0ZPN/windows-colour-blind.jpg) (http://i.postimg.cc/zvzFjKdL/windows-colour-blind.jpg)
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There is a number in each one of those circles, and if you don’t see one in all of them you may be one of the 10% of men with some degree of color blindness.
(You are meant to see 45 8 29 in the first row and 56 6 25 in the second)
Thankfully Windows 10 is there to help you out, with a mode intended to help you discern color differences a bit better.
(http://i.postimg.cc/DzYSDsyJ/colour-filter-2.jpg) (http://i.postimg.cc/sg4Snvh7/colour-filter-2.jpg)
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Use Settings To Turn/Off Colorblind Mode
1. Navigate to the search box and type “color filter“.
2. You will see a list of search results, click Turn color filters on or off from the top.
3. Now you have to use the toggle button to “Turn on color filters” that is available under Use color filters.
4. You will see a list of color filters and color blindness filters, select the one that is suitable for you.
(http://i.postimg.cc/MKDV5nRR/colour-filter-1.jpg) (http://i.postimg.cc/DyqBTfGy/colour-filter-1.jpg)
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To quickly activate or deactivate the mode there is a keyboard shortcut to Turn On/Off Colorblind mode. You can always use Win+Ctrl+C keys to Turn On/Off your current filter.
For a more in-depth explanation and options have a look here. (http://www.windows10newsinfo.com/smf/index.php/topic,36329.0.html.)
source (http://mspoweruser.com/if-you-dont-see-all-the-numbers-heres-how-to-switch-on-windows-10s-secret-colorblind-mode/)