I believe the answer is Monochromatic
A color scheme could be categorized as monochromatic if it's derives only from single based hue using additional tints, tones, and shades.
The usage of these will alter the brightness and the saturation of the color just like what we see in the painting.
The little dot next to the quarter note counts as a third beat. So it basically is an extra one quarter note... I hope this helps ;)
Answer:
Cool, might wanna add more
Explanation: