create a neon glow coreldraw x3

Hi, I am creating an illustration of a 50's diner,I want to create a neon tube with a glow around it as if it is lit up,I have done the line draw of the neon strip, converted the line to an object,then did a drop shadow in the normal mode with a low feather number,but it just isn't bright enough to look like a "neon" strip.

any ideas????        vince c.