fix: Circled Image not visible on B&W E-Ink screen

[nthState]

fix: Circled Image not visible on B&W E-Ink screen

Background

I've been reading this book on my Kindle, which has a black and white e-ink screen, when I came to the section about a pin header, I couldn't easily see the circled pin header.

Fix

The fix was to change the way the image was highlighted

Old (Colour)	Old (Black and White)

New (Colour)	New (Black and White)

Testing Steps

• Use a device with a black & white screen, preferably an e-ink screen and view the intro/install section of the book

Acceptance Criteria

• The image looks good in both colour and black and white
• The image has an acceptable highlight in both colour and black and white

[adamgreig]

Thanks, this is a good improvement! I wonder if it could be even higher contrast when in colour though -- perhaps the rest of the image could be even further dimmed, or a thick border in another colour added around the highlight region?

[jonathanpallant]

I'd merge this as-is; it's a good enough improvement and we can always go around again later.

[nthState]

Apologies, I'm not a great user of graphical tools to create what you suggest/need

[adamgreig]

Sorry this got dropped, thanks for the improvement!

bors r+

[bors]

Build succeeded:

• build