new transparent colors

[Mojca M. <moj...@gm...>]

Dear developers,

are other terminals (apart from svg, wxwidgets, qt) supposed to
implement new transparent colors now, or is the feature still
experimental, and might be better to wait a bit?

What should terminal do if it gets instructions:
    set_color(r,g,b,a=0.5)
and then
   fill(...)
with FS_TRANSPARENT_SOLID and fillpar 30 for example?

See also pdfcairo's result of the new demo, attachmed. To me it seems
at least a tiny bit problematic that each line of the arrow is drawn
separately.

Mojca