Hola!
To make the two colors blend together better you can apply a 'filter' of oils or enamels. A filter is a very diluted wash that goes all over the model.
What I do when painting uniforms is to add the base color with the camo colors to get some coherence between the colors. In this particular case this would be adding Dark Yellow to the Dark Green to lighten it and blend them together more.
Hope this is of some help
