I use HTML content like the below in an HtmlTextBox:

<a style="color: red" href="some link here">some text</a>

The color is not respected when I export to PPTX. The output color of the generated link is always the default blue. In the rest of the formats that support hyperlinks, the color is correct.

I tried to wrap the <a> tag also with <p> and <span> with the same color setting, to no avail.