improving color stack in xdvipdfmx

[Philip Taylor]

Excellent news, Shunsaku-san.  I hope very much that your other 
commitments will allow you to look at this again at some point in the 
not-too-distant future.

/Philip Taylor/
--------
On 10/06/2020 15:17, Shunsaku Hirata wrote:

> Currently I can't spend much time for this but technically having one
> more stack for transparency (actually this could be ExtGState stack)
> is relatively easy, and also, extending xdvipdfmx to support various
> color models is definitely possible.