Snapshot shows up as blue color

[hossbags2]

taking a screenshot, snapshot shows up in blueish color, not true color

[romhacking]

About this issue #411. Don't use hq2x, hq3x filters or use File > Save Screenshot As...
16-bit per pixel is set here

fceux/src/drivers/common/vidblit.cpp

Line 187 in 2b8f6e7

b=2;

then set 16-bit palette

fceux/src/drivers/common/vidblit.cpp

Line 307 in 2b8f6e7

palettetranslate[x]=color;

and at the end this palette is used when saving the screenshot

fceux/src/video.cpp

Line 586 in 2b8f6e7

u32 color = ModernDeemphColorMap(tmp,XBuf,1);

[BeholdersEye]

Possibly related to #692 ?