Simplifying A Landscape In Terms of Temperature

When painting a landscape in watercolor , oils etc, it can be overwhelming to grasp all the detail and the color variants for anyone, much more so a beginner.  Let me give you a way to see and breakdown the subject easily.  See it NOT as a landscape, but as a series of colors going from warm (the light side of an object-ie: the sun) to the cool side of an object ( less sun , so blue ).
So see the image and the color bar at the lower left.  It starts with warm light- bismuth yellow, orange, moves to raw sienna, olive greens (for this bush exercise) then starts to get to sap green, and then hookers, chrome and greens that you add cobalt blue , or indigo to to darken.  Let these different colors interact as the move around the object by placing them next to each other, sometimes mixing, sometimes not.