[ZiggyF]

I have noticed that since firmware 4.28.1822 the epub reader no longer seems to take into consideration the color tags from the css file. I was hoping that this would be fixed in a later version but the problem is still there.

I have quite a few epubs that use different font colors -- e.g. a lighter grey for links or to set apart a line or paragraph from the rest of the text, or white to "hide" some letters or passages.

Until recently, it was OK to use:
<p><span class="t1">Lorem ipsum</span></p> in the text file
together with .t1{font-size:1em;color:white} or t1{font-size:1em;color:#ffffff} in the css file.
This still works for kepubs but no longer for epubs.
Also, the desired color is still displayed correctly if I change it within the text (e.g. <p><span style="color: rgb(255, 255, 255)">Lorem ipsum</span></p>) for every single word/line individually. The problem only exists when a color tag is assigned in the css file.

Is this a bug or a deliberate "improvement"? I know I could just read kepub instead but I much prefer epubs.
Does anyone know a way to fix this other than editing every single epub individually?