Mmm strange.
Concerning your question to change colorsettings of BSPlayer:
I don't know which version you're using, but in build 500 there are two possible ways, the working (or not) of which are also depending on your video-settings in BSPlayer concerning the use of overlay.
If you right-click on BSPlayer's video-window you will see "color controls" and "HW color controls". Now, when I use overlay Mode 1, the HW color controls function and these have a slider to set "Hue", which might do the trick you wish to perform. (The non-HW controls instead have "Saturation", which I don't think is a solution for your problem)
Success!