In my master bathroom I had this hideous green countertop.  I’m not joking, look at it:
I had changed out the drawer/cabinet pulls when we first moved into the house almost 4 years ago and I switched out the light above the mirror as well.
I finally decided that I needed to CHANGE THIS COUNTERTOP!
So I started researching paints to see if any would do the job.
After a bit of research I found that Krylon Fusion for Plastic primer would do the trick of sticking to the laminate. Once I saw that, I started looking at other Krylon paints and thought that the Hammered Finish looked like a good countertop color. I looked at the textured spray paints, but I didn’t think I would be happy with the bumpy surface they would leave.
These are both spray paint, which make the job quicker, but also SMELL and leave a dusting over everything, so if you go this route, make sure to COVER EVERYTHING and that your bathroom is well ventilated.  WEAR A MASK and GLOVES as well to help protect yourself from the fumes.
Prep your area.  Clean your countertops with a cleaner (I used SoftScrub with bleach).  Allow your counter top to dry. Next, tape off the counter tops (seen above) and then cover any walls, cabinets and sink with sheets, thick cloth or newspaper.  I also laid a sheet on the floor.
Although the Fusion for Plastic Primer is a no-sand primer, I decided I didn’t want to chance it so I lightly sanded down my counter top – this was definitely not necessary and would skip if I did this again.
Don’t sand too deep.  It will require more coats of paint than usual to hide the small scratches.  Just break the surface to help allow the paint to stick.
Wipe your countertop down and allow to dry.
Now it is time to spray on your primer.  Make sure to do thin coats, spraying 8-12 inches away from the surface.  Spray in long sweeps side to side.
(Above: first coat of primer)
(Above: third and last coat of primer)
I let each coat dry for 30 minutes before moving on to the next coat.
After fully covering my counter I let the primer dry for two hours and then moved onto coating with my counter color.
It is the same process as above.
(Above: first coat of hammered metal paint) 
 (Above: 4 coats of paint – LOVING IT!)
The next step that I did involved a Krylon clear coat.  However I do not recommend doing it this way. The clear coat kept spitting out globs, so now I have spots instead of a smooth finish.
It is still better than the green, but VERY frustrating.
(click image to enlarge and you’ll see the spots).

This is what you should do instead:

 Make sure not to put anything on your counter during the 7 days.
We aren’t even showering in this bathroom during this time period.
After it is set, you will want to use polyurethane to cover the paint. Follow the directions on the package.  The more coats the better… 3-4 should be good.
I have plans of re-coating with the hammered finish and then letting it set for the 7 day time period and then taking the poly route.
A new counter for under $35!!! Now that is a bargain!