Weft Colour Charts
Here are the colour charts I use for cotton, bamboo, tencel, cotolin, silk noil and cotton/bamboo :
http://www.mbrassard.com/produits-ang.html
For superwash wool and superwash tweed :
https://www.knitpicks.com/yarn/stroll/c/5420133
https://www.knitpicks.com/yarn/stroll-tweed/c/5420150