HY-1.8 SPI - RGB vs BGR issue - Adafruit lib

Hi, using this nice mini TFT module with Adafruit's ST7735 libraries I see the colors are BGR coded (instead of RGB). I've been thinking that is a module feature, but recently I am running it with Cosa ST7735 driver and the colors coding seems to be ok.
Is there any quick hint where to look at (in the Adafruit's driver) to find the issue?