Readium on mac no longer supporting 'rgba' styling on links

[artbyrt]

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[artbyrt]

This issue is a Bug
Expected Behaviour: the test sampler book has ‘rgba’ styles on links which are being ignored - a substitute opaque teal colour is being used.

download link for book is at: http://artbyrt.com/rt/tht-epub3.html

sample css :
p.return a:link {
font-size: .89em;
color: rgba(117, 19, 0, .8);
padding: .3em;
}

p.return a:hover {
background-color: rgba(26, 130, 148, .2);
border-radius: 5px;
}

These colours are being ignored by newest Readium (earlier version did display as instructed.

Readium Chrome extension
version ?? [the ‘about’ menu selection is greyed out]
OS 10.10.5 Yosemite

Browser and version
Chrome Version 58.0.3029.110 (64-bit)
OS 10.10.5

[Daniel Weck]

Duplicate: #291