Sublime 2 -changing background color based on file type?

Question

Using an existing Sublime 2 color scheme, is there a way to tweak the background color selectively for eg. .js files only? Many thanks!

Answer 1

For me I wanted to add color scheme to .conf (apache) file

opend myFile.conf in Sublime

Tools > Command Pallet > Set Syntax : groovy

I chose "groovy" you can choose which ever one you want.