This is a color palette to get colors changing smoothly from RED->YELLOW->GREEN
RYBPalette.php RYBPalette class it tries to imitate Microsoft Excel conditional formatting color scale color palette to be created base on your size requirement
PoorRYBPalette.php PoorRYBPalette class this is a poor implementation of the Microsoft Excel conditional formatting color scale, using linear incrementation in RGB values
RYBPaletteTest.php This file demonstrates the difference between the various implementation
tags: red yellow green color colour palette table highlight php colour
this is a test