I've used the Bold statements from My Favorite things and a selection of pigment inks.
Mine are from the craftstore and have no brand, but you can use any colored ink, pigment or dye or even embossing powders in all sorts of colors.
I only have Distress dye inks and they're not designed for this ;-)
I was inspired by a card I made a while ago, and for that one I stamped red ink of red cardstock, but now I wanted a more festive/summery look.
For more information on the Virginia's view Challenge #16, see this