When I have played about with CHS, I have sometimes, under certain conditions (copying text from my Concise Oxford Dictionary app.), been able to see that it does seem to support rich text to some extent (e.g., coloured text) but only in the single latest clip in the Clipboard buffer. That formatting was expunged as soon as the next clip was brought into the top of the buffer.
That was under Win7-64, but I can't seem to get it to work at all now, under Win8.1-64 PRO.