What part of "Don't paint layers" did you miss? Here's the point where I quote the relevant sections from the Rules because apparently you won't read them.
"Foreign Substances & Modification: Beyblade and launcher parts cannot be painted, coated, or physically modified in any way that affects their performance except in the methods explicitly outlined in the green section below . Bladers who intentionally modify the performance illegally of their equipment will be disqualified and potentially banned from future WBO events."
"Applying Nail Polish to Stickers: Applying a thin coat of clear nail polish to protect the stickers of your Beyblade for aesthetic purposes is permitted. However, if a judge determines you have applied a copious amount of nail polish to the point where it might significantly impact the weight of your Beyblade, you will be obligated to switch out the part for another version of the same part with no nail polish applied. If you cannot, you will be given a match loss.
Marking Parts: Parts may be marked in order to differentiate parts from your opponent’s in the event of a double Burst Finish, or to maintain the orientation of your combination’s parts should it burst and need to be re-assembled. Stickers may be used to do this, but must follow the rules outlined under “Sticker Placement” above. Alternatively, you may apply minor markings (single lines or dots) to them with a pen or marker. Marking parts in this manner is permitted, but you may not draw on your parts for aesthetic purposes. Other methods of marking not explicitly outlined here are not permitted and will be considered a “foreign substance” as defined by the section above.
Painting or Decorating Launchers/Grips/Accessories: Launchers, Grips, and Accessories may be painted or decorated for aesthetic purposes only. Any paint or decoration added must not affect the performance or originally intended functions or gimmicks of the part and should not obstruct your opponent’s ability to launch properly in any way. If a judge determines your launcher, grip, or accessory has been modified to the point of illegality due to such modifications, they may tell you to you switch to a new version of that same part."
Don't Paint Layers!
Now edit your OP and mark this as answered!
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Hey, parents! Here are all the answers to any questions about WBO Tournaments you might have! Thread-Guide-Hey-Parents-Answers-to-your-WBO-Tournament-questions
Please consult this guide linked below on how to arrive at tournaments before they start! https://worldbeyblade.org/Thread-How-to-arrive-at-tournaments-and-other-events-on-time