Here’s a wacky mashup that actually has a business model. Monster.com and hair coloring experts Just for Men have launched a new Web site and career guide aimed at men over forty who are presumably concerned about their growing gray hair. The site is called a Monster “Special Career Building Exclusive.”

The site plays up 40+ men’s concern over job security and finding a new position in today’s economy. The site is going away an e-book called “The Guy’s Guide to Reenergizing Your Career”.

And, oh yes, if you think that darker hair will help you win that next job, there are coupons for products at Just for Men.

The two companies are even running a TV ad where a daughter gives her father a box of Just for Men as he laments over his upcoming interview. Later, he comes home, hair darker, confident that he got the job. He gets a hug from his loving daughter.

All of the links on the site (except for the Just for Men ads) go to the Monster.com “Career Advice” pages. You can always click the main Monster header to go to the Monster.com home page.