The G5 Mane 6 are the same colors as the G4 Mane 6.

[Shady Mist 56]

Sunny and Applejack are orange.

 

Hitch and Fluttershy are yellow.

 

Izzy and Twilight are purple.

 

Zipp and Rarity are white.

 

Pipp and Pinkie are pink.

 

Misty and Rainbow Dash are blue.

 

P.S. I guess you could also include Sparky and Spike for being green, but Spike's more purple than green, but Sparky also has purple being his eye color.

[14Fan 1,312]

Not exact but close enough. Still cool though! Didn’t notice that 

[AlbaTross 1,586]

I can see the connection, but I think it's in acceptable homage territory.  Nah, the G5 cast is derivative in other ways.  When it comes to design elements though, Hitch clearly stole Sandbar's colour palette.