Hey there Tara. sorry for the delay! I just got back from a photo shoot for Goldwell on the West Coast and I have not forgotten your question.
The Silver is HOT! I know. What makes it special and POP! are the fine slices of black that sit underneath. This sort of blonding is tricky, but possible. This particular was done on a natural high blond level 8 and we used our new High Lift 11 Series 2+1 11SV. and Silk Lift Strong and 20 volume in a back to back foil alternating pattern. However, in any case, you need to get the canvas clean enough and even first. once you achieve the lightest level of blonding, apply Goldwell Structure Equalizer spray to dry hair and then with Goldwell Colorance Mild Alkaline try my favorite formula of 40mls Colorance Intensive Lotion 10mls 10BS,5mls Clear,3mls 8AS,2mls P Mix. This will have enough alkalinity to squash the warmth and then give you a clean silver. PS>>>Remember that the blond needs to be clean but not over bleached and stressed. If you have dark tint on the hair, I would reduce that first with Goldwell System Color Remover. Hope this helps and drop me a line anytime! j