-Usage-
1)
When you launch it, you will see a list of colors defined by UIColor at the bottom.
When you move the slider at the top, the area immediately below (called the color area) changes color.
The counterpart to Alpha is transparency.
0 makes it completely transparent and 255 makes it opaque.
The 8 digits below it are the code for the HTML color specification of the current color.
Tap one in the color table below to display that color in the color area.
If you tap the "Favorite" button below, the screen will change and you can save the color of the color area in the favorite table.
If you press and hold a row in the table, the color will be copied there.
Also, if you tap the saved color, it will be copied to the memory, and if you tap the "Main" button to return to the first screen and tap the color area, the color will be displayed in the color area.