Here is a custom good looking Octane car design in Rocket League, with painted wheels Jandertek and decal Tidal Stream.
Lime Rocket League Octane Design
Bodies: Lime Octane
Wheels: Lime Jandertek
Decals: Tidal Stream
Primary: C1-R3
Accent: C5-R3
Values: PS4 - 23.4K, Xbox One - 27.7K

You can check more Rocket League designs (https://www.goldkk.com/rocket-league-designs-list) of almost all battle cars in the game, featuring various colors and Rocket League items. There are a number of ideas in different styles. You can get the instant prices of each item and the price trend over the last 15 days for platforms (PS4, Xbox One, PC, Switch), to purchase items or create the best designs for you.
Rocket League Octane prices: https://www.goldkk.com/rocket-league-prices/xbox-one-index/Octane
Rocket League Jandertek prices: https://www.goldkk.com/rocket-league-prices/xbox-one-index/Jandertek
Rocket League Tidal Stream prices: https://www.goldkk.com/rocket-league-prices/xbox-one-index/Tidal-Stream

Rocket League Rocket Pass 6 launched on March 25, 2020, and will run until July 15. The Rocket Pass of season 14 is led by the new cyber-inspired car - Ronin, upgrade to Rocket Pass premium, you can unlock the cybernetic supercar immediately. As usual, Ronin GXT is also the reward of the highest tier - Tier 70. You can choose to purchase the Premium Rocket Pass with 1000 Rocket League credits and tier up or buy the new items including Ronin GXT directly at online Rocket League trading shop like GOLDKK. Otherwise, players need to complete the challenges and tasks for tiering up in the Rocket Pass.