less files in not being overridden by files in local/less

Hi,

Modified less/home.less to change the colour of the jumbotron as follows:

// Home Jumbotron
.jumbotron {
background-color: orange;
position: relative;
margin-bottom: 0;
}

I then copied that file to ----> local/less/home.less

and modified it again to:

// Home Jumbotron
.jumbotron {
background-color: purple;
position: relative;
margin-bottom: 0;
}

When I go to my site the jumbotron comes up orange not purple - what am I doing wrong?

I've tried turning off development mode and compiling less --> css, clearing browser cache etc

Thanks in advance,

Adam