GRIDCOLOR

Purpose:

Sets the color of the plot grid lines.

GRIDCOLOR(win₁, win₂, ..., win_N, color)

win_N	-	Optional. Zero or more windows. Defaults to the current window.
color	-	An integer, the color value.

gridcolor(RED)

sets the grid color of the current window to red.

gridcolor(w1, w3, w5, LBLUE)

sets the grid color of W1, W3 and W5 to light blue.

For a list of supported colors, use the MACROS function.