Valentine's Day
Almost any bow can be done in Red, White, Pink, etc.

St. Patrick's Day

Or Spring. Pastels, Bright colors, Butterflies, etc.

Independence Day

Halloween (link coming soon)
Thanksgiving (link coming soon)
Christmas (link coming soon)

(Korker Bows and most other ribbon bows can be made to match any holiday or outfit. Just email me with the colors you want.)
The options for custom bows are endless.  Any colors I have available can be used to make a variety of styles of hairbows. I also have many different flowers available in most colors.