You'll get a warning, sort of like being in the yellow square.

The yellow square of paper lay on the table.

To win, players must put four of the same color markers in the yellow square so that they touch.

Joseph Ray was standing to attention on the yellow square.

Then on the upper left of the panel a yellow square lit up, with a black figure 1 in its center.

I showed him a folded yellow square of paper with a number in his handwriting.

Dark blue, with a border of red and yellow squares.

That window was just a yellow, blazin square of light.

At the start, the first mapping of the green, yellow, red and blue squares is displayed.

The Sun for instance, is a plain yellow square in the sky.