Well, i could post this to suggestions, but as i dont think this needs to be discussed, and as i think you used constants for that (i'd do it that way) it should be possible to change it in minutes:
While you have some menues (tailoring) with black background, and color scema gray/white/green->yellow you also have the buy/sell menues with red/white->yellow and those red texts are pretty much unreadable on that background.
So please just change that constants to something better. I'd suggest NOT using extreme colors like #FF0000 or #0000FF but instead "colored grays" like #FF8888 or #8888FF on darker background. Your eyes will thank you!