Colours.. I like all of them, green, purple, red, yellow.. All colours seem great and I like playing with mixing them to have interesting undertones. These days my favourite combination is red mixed with orange and grey mixed with a bit of purple. As a result I've got a new necklace with interesing red and grey undertones :) Sometimes a slight change of colour makes such a great difference.
Developed inner sence of colour, creating interesting, unexpacted colour combination -that's someting that I really like about designers.