It’s 3 p.m. and you have a heavily highlighted client coming in at 5. And get this—she wants a chestnut brown all-over color—not too dark, but dark! Sound familiar? BTC Member Tracey Holmes found herself in this situation, and wanted advice: “I believe I need to fill her hair first with Redken Shades EQ 06AA, 07C, 08WG and then apply 06N over that…or would it be better to use gels? She has long, thick blonde hair with partial highlights. She hated it the last time we went "dark,” so I really want to nail it this time! What…