Thanks. Mostly blue and black with a touch of purple. The grass is yellow and a little blue and a spot of green, With my tubes, I'd have just used yellow ochre, but I'm still using the limited palette pans.
The fog is fairly simple with oils - just dry brush white over dry background (I've done clouds the same way). For WC, I lifted some color from the edge of the fog area, then did a very light wash of super-diluted black - basically dirty water.
I'm seriously considering stepping up to some of the artists' quality paints. No rush since I still have plenty of paint in the student tubes, but I'm going to order a dot card this week. It's like a color card but the "dots" are sample bits.