Panel Bitmap Lighting

I have been merging the PMDG 737NG Panel with the POSKY 737 Model for last few days and I have now, what I deem to be, a pretty good package.........bar one problem!I only use the 2D panel but I don't use PMDG's panel bitmaps, I use the panel bitmaps from the Skydecks B737NG. i.e. Front Left.bmp, Left.bmp, Back Left.bmp, Back.bmp, Back Right.bmp, Right.bmp, Front right.bmpI was wondering if there is anyways of altering the brightness of the bitmaps so they are pretty well matched to the darkness of the PMDG Main Panel (at night time!!!!!!!!!).I have attached a picture of the main panel and the front right view to show the difference in the lighting.I hope there is a solution, and any feedback is much appreciated.Kind regardsStuart