Each character has the colors of the rainbow, ROYGBIV [Red, Orange, Yellow, Green, Blue, Indigo, Violet] Involved with them in some way shape or form. Either as name, look, etc. When they’re answered, I’ll mention the link.

None are from Star-wars, or a DC Comic.

1.) The answer is Ruby Rose from RWBY, answered by /u/pohtau_ /// Relation, her clothing is black with multiple red highlights

2.) The answer is The Annoying Orange from his eponymous Web series, and whatever the television shows name is, answered by /u/gerbil_george /// Relation, It's a Orange, what else do you expect?

3.) The answer is Dick Tracy, from his Eponymous Comic. Answered by /u/Zam0070 /// Relation, his clothing is mostly yellow.

4.) The answer is Lucio from Overwatch, and Heroes of the Storm. Answered by /u/Zam0070 /// Relation, his clothing is green, as is some of his abilities.

5.) The answer is Megaman from Megaman, answered by /u/gerbil_george /// Relation: Megaman's base form is Blue.

6.) The answer is Inigo from Fire Emblem Awakening/Lazlow from Fire Emblem Fates. Answered by /u/LambentEnigma /// Relation: Hair color can be colored Indigo in Fire Emblem Awakening. I thought his name was Indigo.

7.) the answer is Violet Gray from Peanuts, answered by /u/zam0070 /// Reason -- Name

For 3, and 4. There colors are based on clothing colors. Where there main attire being Yellow, and Green respectively. 4 is in two video games by the same creator. 3 has been in a Movie and a comic series.