Here's my headcanon for Derpy's family, as a filly. We see Lightning Bolt/White Lightning with Ponet in Hearts and Hooves Day. Silver Script and Written Script look like brothers. Derpy has a similar color scheme. Bam. Coloring them all together just cemented my theory. Also I'm thinking maybe the Scripts are fraternal twins otherwise why do they have those names and cutie marks the same like that if it's not a family thing? I still think of Silver as younger but that can still be possible, just not by as much. Don't they look related?