NOTE : you can only add pink options to items that require level 380 to wield, also you must have more than 3 options on the items you are trying to upgrade
these items are : bone blades, dragon knight set, venom mist set, venom mist staff, sylphid ray set, sylphid ray bow, volcano set, explosion blade, and the final summoner set (i forgot the name)
to add pink options :
1.) go to the chaos machine and when it asks what combination click the bottom one, the 380 option.
2.) add jewel of harmony and jewel of guardian (they can be bought at devias2, at 9,77)
3.)add your 380 item and click combine.
you dont lose your item if it fails and its not 100% that it will succeed but keep trying anyway
how to add yellow options to items :
1.)go to devias2 GM shop at 9,77
2.)buy jewel of harmony and use on your item just like you would use a bless or a soul.
3.) this is not 100% success rate and it will tell you if it fails or succeeds
hope this helps