Just a quick computer hint: Since the recent update of the Chrome browser to version 61, the colors were dull on my Windows 10 – not just on the web pages, but also the icons of the user interface. Solution found here:
Open the page
chrome://flags, find the setting “Color correct rendering” and change it to Disabled.
(Sometimes something can be too “correct”, it seems…)
Update for Chrome 62: Apparently they changed something again and removed this option – setting “Force color profile” to sRGB seems to do the trick now.