How can I modify a CSS file programatically?

border-color: #008a77;

tr/ / /s;
($vari, $value) = split(/:/, _$);
# # While you read file, you can just at the time to put this into html form
echo($vari.":<input type = text name = ".$vari." value = ".$value.">");

...
print $vari[i].": ".$value.";n";
...