Per Channel Clipping Warnings in Adobe Camera Raw in Photoshop

In Adobe Camera Raw in Photoshop, The Clipping Warning triangles turn different colors to show that different channels are being clipped.

If no values are clipped, the triangles are black.

If values are clipped in the red channel the triangles are red.

If values are clipped in the green channel the triangles are green.

If values are clipped in the blue channel the triangles are blue.

If values are clipped in the red + green channel the triangles are yellow.

If values are clipped in the red + blue channel the triangles are magenta.

If values are clipped in the green + blue channel the triangles are cyan.

If values are clipped in all channels, the triangles are white.

Note: to view per channel clipping in the Image Preview area, Option + (Mac) | Alt  + (Win) – drag the Exposure, Highlight, Shadow, White or Black sliders in the Basic Panel.