
Zen
If you're genuinely looking for a supernatural model for how shape and positioning effects things, what you're describing does indeed exist. That's what Feng Shui and Chinese alchemy entails.
What I would say about colour and shape is that we very much decide culturally what these colours mean, not the other way around. Red is considerably less used as "evil" in China, for example. In terms of shape there are all kinds of memes and theories one could point to with shape. When using these things for magic, it's always important to remember that correlation does not imply causation. Memes (in the traditional sense rather than the memetic sense, amusingly), do cause specific emotional responses, but they are caused by the meme, not the [thing you associate with magic here], having symbolic and therefore hypnotic power over you.
yes, in china red doesn't mean evil at all, quite the opposite! it symbolises luck, joy, and happiness (edited)