Since Google changed the background colour for images in the Plus stream, transparent images containing black or dark-coloured text have been all but impossible to read. This can be remedied, however, with the help of user-customized CSS rules. All you have to do is paste these into the custom stylesheet for your browser (consult your browser's documentation for the location) and save. The change should be instantaneous, but a refresh may be necessary.
/* Google+ */
.Ag { background-color: #777 !important; } /* thumbnail in stream */
.nI { background-color: #777 !important; } /* large image view */
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| Screenshot showing transparent image (with text) against custom background. |
