How to choose makeup base colour

What colours of makeup base is suitable for my skin tone?
1)If your skin tone is brownish and you have dark eyes circles
Chooose ivory colours as it will lighten your skin tone and make your dark eyes circles less obvious.

2)If your skin tone is tanned
Choose pink for brightening effect

3)If your skin have blemishes or pimples, look red and patchy
Choose green to tone down the natural redness so that your pimples will not be so obvious.

4) If your skin tone is dull and pale
Choose purple as it will brighten your skin and provide instant radiance.