According to Toriyama, he chose red as the color for Super Saiyan God because it looked stronger than blue, and he'd already used gold.
In this form, Goku possesses magenta-red hair (identical to his fur as a Super Saiyan 4) while Vegeta possesses crimson red hair. The hair retains its natural style but becomes more refined (losing any stray hairs).
SSJG is short for Super Saiyan God, and by what many other fans call it, Super Saiyan Red. The form was first achieved by Goku against Beerus, this granted him the power to destroy entire universes.
What is the reasoning behind blue and for that matter rose? With Ssj Blue, Toriyama stated he wanted a color that expressed both strength and tranquility. I made his hair light blue to express how “by overcoming a certain limit he has become both strong and tranquil, able to keep his composure in a fight”.
SP SSJG Goku RED does a little bit of everything, nullifying any Debuffs and Abnormal Condition effects up to two times, and removing Enemy Attribute Buffs. He also has a Crisis-esque Unique Ability, making him a reliable Fighter both Offensively and Defensively.
Super Saiyan Blue is stronger than Super Saiyan God. The narrator in Chapter 5 of Dragon Ball Super stated Blue was stronger and it was also said in the anime Blue was stronger. That's why they use the form. There is no plot hole with Goku getting a stronger form using the power of Super Saiyan God.
Super Saiyan Blue is a transformation that is achieved when a Saiyan who can use the power of a god transforms into a Super Saiyan. It is the successor of both Super Saiyan God and Super Saiyan, and is a hybrid of the two transformations, with tremendously more power than either.
It's said by many that Super Saiyan Blue Evolution is not as strong as Ultra Instinct. That it is only as strong as Super Saiyan Blue Kaioken X20.
Beerus has said that Whis is stronger than him, and Whis once demonstrated this by knocking Beerus out with a single blow to the neck.
Does that mean now that Goku has finally awakened the powers of the True Ultra Instinct, it just might be his ticket to defeating Beerus? Unfortunately, the answer is no.
As mentioned previously, the Super Saiyan Blue form was an adaptation of the Super Saiyan Rose form. This means that the Super Saiyan Blue form allows Goku and Vegeta to reach god-like Ki. Unlike Super Saiyan Rose, this form does not turn the user into a true god, but allows them to channel the power.
In the anime, Super Saiyan Rosé is simply the standard Super Saiyan form for Goku Black, and it matches Super Saiyan Blue in strength. However, the manga states the form is the equivalent to Super Saiyan God Super Saiyan.
Red light has longer waves, with wavelengths around 620 to 750 nm. Blue light has a higher frequency and carries more energy than red light.
With the introduction of Ultra Ego, and confirmation from both Vegeta and Beerus that Ultra Instinct wasn't his style, he'll likely never achieve the form. Nevertheless, it remains one of the most tantalizing fantastical forms for fans of the franchise.
He stated that the only reason he even changed Gokū's hair and eyes to a red color was so that viewers would understand that a transformation was taking place. According to Toriyama, he chose red as the color for Super Saiyan God because it looked stronger than blue, and he'd already used gold.
Ultra Instinct is also known as the mastery of self-movement, which basically sums up what the power does very well. Using Ultra Instinct, the user gains the ability to automatically move as each of their body parts almost feel like they can think for themselves.
Vegeta was able to put up a decent fight against Jiren during the Tournament of Power, and he even defeated Toppo, a God of Destruction candidate. Unfortunately, Vegeta's level is defined below that of Broly's, and no matter how strong Vegeta is right now, he will end up getting crushed.
As the main character, Goku eventually surpassing Beerus is all but guaranteed. After all, Goku's journey is one of encountering and overcoming obstacles. It was demonstrated with Demon King Piccolo, then Frieza, then Kid Buu. Beerus is yet another obstacle for Goku to overcome.
Whis is very powerful, and fans of Dragon Ball know the immense power that the Angel holds. However, her sister Vados likely has her beat when it comes to sheer power.
Super Saiyan 3 Goku at full power has a battle power of 24,000,000,000, 2 billion above Kid Buu's level.
By using his Ultra Instinct -Sign- form, Goku achieved True Ultra Instinct, which affords him the benefits of Ultra Instinct along with the willpower gained through his Saiyan emotions and is Goku's strongest form to date.
Ultimate Super Saiyan is the highest form of Super Saiyan. Its power is so unbelievable even when restrained could tear apart a whole planet. goku is the only one to achieve this form. He is actually a super saiyan 10.
Son Gohan Beast is a transformation achieved by Son Gohan. It is unlocked by immense rage, and was achieved when against Cell Max where the Saiyan-half saw his teacher under threat. It is a direct successor to the Ultimate Gohan transformation, and as such, an extension of the Super Saiyan 2 transformation line.
The Saiyan Beyond God state isn't necessarily a transformation. It is simply the name applied to the state in which a Saiyan has mastered the Super Saiyan God transformation, to the point where they are able to utilize its divine power without transforming into it.
Super Saiyan Blue, however, is a stage beyond. It stands to reason, then, that Super Saiyan Blue as a form is significantly stronger than Super Saiyan 4. It would be like comparing Goku's base form to his first Super Saiyan form in terms of power.