The colour of your underwear matters, if you believe in stuff like this. Apparently the colour of your undergarments can help or hinder your mood. Colours vibrate, at different levels depending on the colour, it goes thru your whole body says a colour-response analyst and can effect your mood and energy.
The worst shades to wear are black, white and grey as they provide no vibration at all. The best colour for women to wear is ultra-marine blue.
Check out what the colours mean and pick which are best for you!