Rainbow colored Bismuth can be a wonderful stone to use for focus, visualization and shamanic journeying. It can prevent you from becoming overwhelmed by all of your responsibilities while at the same time increasing your energy levels to deal with them.
Bismuth relieves feelings of loneliness or isolation. It is a stone of transformation and change, helping to adapt to change with calm assurance. Bismuth encourages cohesiveness, so would be very helpful in group and/or relationship dynamics.
Bismuth crystals are protective and offer you a the safety of being hidden from your enemies. Keep one near your front door.
Blue adds these same elements in regards to expressing yourself.