I'm a mouse at the moment , really blond as a child but has got darker as I got older. Now a dull mousy brown, my inner blond is calling me but as a hair colouring virgin I'm unsure what will be best. I will have it done at a salon but what's best ? An all over colour or highlights ,and what's cheaper and a nicer result. How about upkeep is it cheaper for the root touch ups and generally how often would this need to be done, thanks