Hi,
+1 for having the color picker upside down!
I usually think at colors using this scheme:
http://en.wikipedia.org/wiki/File:AdditiveColor.svg
or (in case the link will become broken later)
R
/ \
Y___ / \____M
\ / \ /
\/ \/
/\ /\
/__\ /__\
G \ / B
\ /
C
Regards,
Luca
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