Day 20 - Tree in Sunrise Park 6 x 8 Oil on Panel. Day 20 of 30 - Sir Lawrence Color Temperature Mastery. Today it was a little cooler out there. I had a lot of fun painting this tree in the park. I've been painting in the two hour range lately. I'm getting better at blocking in and the initial shape sketch. This painting has a good range of temperature changes. With only ten days to go I need to kick it up a notch.