refactor getTextColor

[isamu]

• Since there is a default argument, remove the null case
• Do not overwrite arguments
• Make brightness immutable

Summary by CodeRabbit

• Refactor: Simplified the getTextColor function in the user interface. This change enhances the software's performance by streamlining the process of calculating text color based on the background brightness. The function now directly calculates the brightness and returns an optimal text color, improving the visual accessibility and user experience.

[coderabbitai[bot]]

Walkthrough

The changes primarily focus on simplifying the getTextColor function in index.html. The logic for calculating the brightness of the background color has been streamlined, removing unnecessary checks and conditionals, and enhancing the readability and performance of the code.

Changes

File	Summary
templates/index.html	The getTextColor function has been optimized. Unnecessary checks for null or undefined values of bgColor have been removed. The function now directly calculates the brightness using the RGB values from bgColor and returns either #ffffff or #000000 based on the brightness value.

🐇

"In the land of code, where logic is king,

Simplified functions make the heart sing.

No more checks, no more fuss,

Just clean code, without a fuss.

Celebrate the changes, for they are grand,

In the world of code, they make a stand!" 🎉

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