This does not sound so difficult! You could say colour accounts for 50% of photography worth the other 50% being Monochrome but the two things are very different beasts. In monochrome we are concerned with tonal range and dynamic range. With colour these aspects apply but we are also confronted with contracting & complimentary, warm & cold colours and how and where we use these in the image. So in many ways colour is more complicated. Lets make progress in Understanding Colour in Photography
Take a look at this great article by Dave Morrow LINK
Another great article on the subject of colour LINK
How to use colour in photography LINK
This should make you look at you composition in a different way with a view to making colour work in a different way in your images.
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