hello guys.. plz help ! i am trying to make a dark red mmf and i cant seem to succeed. No matter how much color i add it is kind of a pink red color :( 
I dont have access to any wilton or americolor products. Candy melts IMPOSSIBLE TO FIND.
i use cake Flora gel colour.
Please help !!!!

Red needs time to develop give it 24 hours.

What Elizabeth said plus once it is exposed to air (on a cake) it will darken a shade or two.  

Things to keep in mind if you ever need to do this again.............1) most likely it will take on a bitter taste from all the color needed; you can try to mask it by adding cinnamon or other flavoring. 2) don't add your red directly to white....instead add pink, orange, or yellow 1st depending on what shade/color you want to end up with.  Once that color is well mixed in then add your red.  Yes, it take A LOT of color to get dark shades.  3) you might try adding some beet juice-  liquid /water used to cook fresh beets in)  I would boil/reduce that liquid as much as possible to keep the fondant from getting overly sticky.  

When are you adding the color? Adding red to white fondant will take forever. Mix a healthy amount of red to the water when you are making the MMF in the first place. This is much easier and more efficient.

When making red, I always add pink to the marshmallows after they have melted, put it in my mixing bowl, and add 1tbsp of red. I let that mix in the bowl, knead it out and let it rest. I usually make my fondant 3 days before I need it and the color is perfect. I've had that weird, bitter taste once, and that is because I added too much color trying to get the red or black. 

You can also add cocoa powder to the fondant before you add the red coloring.  May need to add a little glycerin if the powder makes your fondant too dry.  It is much easier to get the red darker that way.  Works for royal icing as well.