[dr_lew]

I was taught in elementary school that white is the combination of ALL colors.

As established by Newton in his OPTICKS. Note this work is the origin of ROY G BIV :

"... note the confines of the colours, that is of the red MabF, of the orange acdb, of the yellow cefd, of the green eghf, of the blue gijh, of the indico iklj, and of the violet kGAl."

The letters indicate adjacent rectangles that comprise the spectrum. ( I changed the consecutive greek letters into consecutive lower case latin letters. )

[AlexW]

""... note the confines of the colours, that is of the red MabF, of the orange acdb, of the yellow cefd, of the green eghf, of the blue gijh, of the indico iklj, and of the violet kGAl."

dr_lew. your way over my simple head, but if it validates what I was taught, it is fine for me :)