Below is a grid in which a latin square of numbers is to be overlain with a latin square of colors. That means each column and each row is to contain exactly one of each digit from 1 to 5, and exactly one of each color from among

light blue
pink
yellow
orange
light green

Besides that, each digit is paired with each color exactly one time in the whole grid. As you can see, no yellow is shown so far, but the rules are sufficient to place all colors (and numbers) correctly.

		1
	1		5
	5		2
5		2		4