I have a client tomorrow who is natural base 5 with small amount of grey and has previously used a boxed home colour. She loves 5/77 wella . So her roots are her natural colour and mid lengths and ends have faded to quite an orangey tone about a 7/73. I was going to apply 1/4 5/0 and 3/4 5/77 0n her roots but what would you use on the rest and for how long? I have some 5/07 as 5/77 will be too warm. Does anyone use 3% with wella tints? Thanks in advance