(Credit for these goes to blazingemeraldau)
I was thinking about concepts for designing the three orbs in my Pokémon Advanced Generation (Hoenn Anime) rewrite, so I asked Blazingemeralau to draw the three orbs for me, and she did. I also got permission from her to post the drawings of the three orbs she made.
The Red Orb has a bit of a flame pattern, due to Groudon being associated with magma/lava and fire, and that symbolizes the connection between Groudon and the Red Orb.
The Blue Orb has the textures of waves due to Kyogre being associated with rain and water, and that symbolizes the connection the Blue Orb has with Kyogre.
And finally, the Jade Orb has cloud textures because clouds are in the sky, and Rayquaza is associated with the sky, and that symbolizes the connection the Jade Orb has with Rayquaza.
Now as a reminder, these three orbs make their appearance in “Thrives of Mt Pyre”, the Scuffle of Legends episode trio (“Droughts and Downpours”, “Groudon and Kyogre”, and “Battle of the Ancients”) and “Training with the Orbs”.
Now the Red Orb and the Blue Orb make their first appearance in “Thieves of Mt Pyre”, when Archie and Team Aqua arrive and take the Blue Orb, and later in the same episode, Maxie and Team Magma take the Red Orb.
And the two orbs reappear in the Scuffle of Legends episode trio, when Archie uses the Blue Orb to awaken and control Kyogre, and when Maxie uses the Red Orb to awaken and control Groudon… but both team leaders end up becoming controlled themselves when the orbs absorb into their bodies. The Jade Orb makes its first appearance in “Battle of the Ancients” (the third & final part of the “Scuffle of Legends” episode trio), when Max arrives at the top floor of Sky Pillar, where he, under orders from Steven Stone, takes the Jade Orb and uses it to summon Rayqaza where Rayquaza would fight Groudon and Kyorge.
The three Orbs make their final appearance in “Training with the Orbs”, after Ash and May have gotten the orbs out of their body (the Red Orb for Ash and the Blue Orb for May) after training with Tate, Liza and Juan on Mirage Island. The hoenn gang returns the two orbs to Mt Pyre, and Max returns the Jade Orb to Sky Pillar.