This is a poster for the musical singing in the rain. The main poster colour scheme is a range of blues. when we think of blue we think of cold as it is a cold colour and i think this works well for the singing in the rain poster.
How to Effectively Use Transparent Backgrounds in Graphic Design
Bumi Parahyangan promotional poster and brochure by Rittsu, at Behance. Triangles don& seem to be popular shapes to use in graphic design, but Rittsu executes them well here. Notice the subtle arrows pointing right to persuade the viewer to read on.