[Scribus] Question about Krita and Scribus

[pixelnate]

I was playing around with the KOffice suite last night and I have a few 
questions.

When you are in Krita working with an 8-bit CMYK image, 1) How can you 
select a cmyk color? All I see are RGB, Grayscale, and HSV palettes. 2) 
How do you view/edit/apply channels/alpha channels? 3) Can Scribus work 
with files from Krita that have alpha channels, i.e. can you place them 
with the transparency intact?

Thanks,
Nate