I've spotted a particularly interesting issue. It goes like this:

• If the program is started while the system display is set to '16-bit High Colour', then the icons for 'Powered by Yahoo!', 'Click to View the Next Location', 'Click to view the Previous Location', 'Click to Refresh Weather Data', and 'Click to Show the Expanded View', all have a solid black field around them (as depicted in the first attached image). No other icons exhibit that behaviour.
• If the display is then changed from '16-bit High Colour' to '32-bit True Colour' while the program is still running, the problem described above still remains as it is until the program is closed and re-run, at which point everything is normal.

• If the program is started while the system display is set to '32-bit True Colour', and it is changed to '16-bit High Colour' while the program is still running, the problem never manifests (as depicted in the second attached image). If the program is closed and re-run, the problem appears as described in the first bullet point.

Most people will probably never encounter this problem, but I thought it was worth pointing out since there are some circumstances (however rare that circumstance may be -- for example, maybe on Windows Embedded with a display adapter that uses shared video memory) where the program may be started while the display is at 16-bit depth, and then a person will see that problem.

Location in the example images is chosen randomly.