Board Thread:General Discussion/@comment-98.198.171.145-20141203034557/@comment-23578415-20150424225435

Tesseract = Space Stone (Blue)

Aether = Reality Stone (Red)

The Orb = Power Stone (Purple)

Loki's Sceptre = Mind Stone (Yellow)

All that is left is the Soul Stone and the Time Stone....Orange and Green respectively if I had to guess :)

(I've actually watched age of ultron to confirm Loki's sceptre)