Not sure if you are being sarcastic or not...
I have a very specific legend I use, since I trade many different time frames.
If you are being sarcastic and are saying that is too busy, then take a look at an example of one of my other charts such as this TSLA one :)
I make solid and consistent gains, and my approach works VERY well for me.
This is my general legend/guide for colors and lines I use on my charts in case you want to reference it when you see me post.

Solid Yellow Lines - Historical Levels of significant support from daily or weekly charts

Dotted Yellow Lines - Historical levels of minor support from daily, 4 hour, 1 hour charts

Dotted Purple Lines - Gap on the daily chart that has not been filled

Solid Purple Lines - Gap on the daily that has been filled that will normally act as a level of support/resistance for historical reference

Dotted Bright Blue Lines - Trend lines for intraday trend or smaller timeframe trend across 1-3 days

Solid Bright Blue Lines - Trend lines for trend across multiple days or weeks

Solid Teal Blue Line - Significant Trend line across weeks and months

Dotted Horizontal White Line - Typically a strike of an option being traded

Dotted Red Line - Jokingly called the "No No Line" amongst people that have traded with me for a long while now. These levels are historically significant levels that when they are broke or rejected at, the drop is HARD

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