Searching 8X2 LCD display with RGB Backlight

Hello, It's quite easy to find 16x2 lcd display with RGB back light, but as up to now, I have found no vendor/distributor providing 8x2 display with an RGB Backlight, and I need about 20 of them.

As an alternative, I was thinking about buying 8x2 displays LCD with standard LED backlight, and change the back light LED with an RGB LED. But, is it possible to change a backlight LED with and RGB LED? Has anyone would have some advice or recommendation for doing so? Thank you very much for your help,

Lionel