I haven't had my mousey brown hair since I was 15 and I am now (whispers) sshhhh 63 - I am now amazed to find that it is turning grey! Thank goodness for hair colours and highlights!!
Most 'mouseys' are actually true ash either dark ash blond or light ash brown,
Look for lighter ash tones when highlighting if you fancy it. I used to be a mouse... have since been pretty much any shade you could think of often in combination but have learned subtle variation on my natural colour is the most flattering, not so much fun though. Pass the purple and pink...I feel a change coming on
Mouseys like the nacherrral greasy/flat/green/smelly ungroomed look....not for them scented conditioners or urban styling. Often mouseys are seen as too natural, with all hair intact - yuk !
Support your stylist & you <i> might </i> get on their website.