Is there any form of shampoo that gets rid of those flecks of grey at the sides of your hair?, the only thing I can see for men is Just For Men but I dont need or want to go down that line if I can help it, I have blone/light brown hair.
You're maybe more aware of the grey flecks yourself - as they are not so noticeable if your hair is lighter. I don't live in Britain anymore but I do remember that there were coloured mousses available. You could just select your colour and apply it to the bits where you needed it. It washed out when you washed your hair but I think (hope)it was ok if it rained.
I meant to add that this isn't specifically a male product - more unisex - as are most of the haircolouring products (even though they have pictures of pretty women on them)
What's wrong with grey? Be grey and be proud!
But anyway if your hair is lightish, it probably doesn't show much at all, or just makes it look streaky. My partner's long brown hair has lots of grey, but you can't really tell from more than a couple of feet away.