Game Boy color test utility

I am providing a browser version as a demo but the real purpose is to put this palette editor on a Game Boy and test colors there to ensure that your palettes will work well. 

This utility can give you the rgb values to type into GB Studio's palette editor when you get a palette you like and it can even output a number for the color that can be used with Mico27's set palette color plug-in: https://github.com/Mico27/gbs-setPaletteColorPlugin

Controls

Gameboy	Web	Function
A	Z	Select
B	X	Back
Select	L Shift	Show long color codes when on main palette page
Start	Enter	Open menu

When you are editing the RGB values, if you hold A when pressing left and right it will raise and lower all 3 which effectively raises and lowers the brightness of the color. This only works on the main screen, not the test screen.

Here is a more complete tour of the tool: