Support of High Contrast theme in Windows client

Due to a rare retina disease I'm running all my electronic devices in night mode or equivalent with white/yellow letters on a black background. The white background overpowers the few rods and cones I have left in my retina and it takes me at least ten times as long to read black text on a white background. I have to read the text one letter at a time. If the font is small or grey than I can't read it.

Unfortunately the Windows Let's Encrypt client does not support the High Contrast theme which switches the screens from black text on a white background to yellow text on a black background. Almost all Windows applications, including my VB 6.0 utility I started working on 20 years back supports High Contrast themes. It's basically a matter of using the current system colour codes for the text, background and so forth rather than hard coding white and black. Once you've figured out how this works in the Let's Encrypt IDE it should just be be a simple replacing of colour codes.

Or if anyone knows of any work arounds I'd sure appreciate it.


Welcome to the Let's Encrypt Community, Tony :slightly_smiling_face:

Which Windows ACME client? There are several. None of them are actually owned or developed by Let's Encrypt.


Oops, my apologies. I had forgotten the client software was a different organization. I'm running the Certify the Web client. I will post this request on their forum and investigate the other available Windows cilents to see if they support High Contrast themes.

Thank you, Tony



What say you?


Definitely do that, but many client developers are active here, including Certify The Web's developer -- @webprofusion.


Hi, we do have a light mode and a dark mode theme, but not a high contrast one. Do you have a screenshot of the type of thing you need?

I see you've started a new thread on the certify community, we can continue there: Support of High Contrast theme in Windows client - Question - Certify The Web - Support Community


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