Advancing and Receding with Colour and Creating Focal Points

My coloring is warm and zesty. light khaki or beige pants seem to work and also white pants. However if I want the top to recede do I look for shirts that don't have pattern because they will stand out and be the focal point of the outfit? Do I need a solid top or does it just have to be a darker color to recede? Many colors in my pallet are bright, and I like them. However, how do I wear colors around my face in tops yet have my upper body recede and look thinner? Horizontal detail on top, possibly? Am I wishing for magic here or is this possible?
Thanks for any suggestions. Imogen,
I am part of the evolve your style program and I have an issue for you to address. If you've already written a post regarding this, could you share the link? I am a v shape with a somewhat short waist. I am 5'4 so slightly petite. I want to have my upper body visually recede and draw attention to my lower body as this is where I am slimmest. I have really been noticing people who do this well and not so well.

How to Make a Light Colour Recede

The first point to consider is that even with light colours which are more naturally advancing, just a small difference in value will make one colour less obvious and more receding than the other.